./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--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.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 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:19:06,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:19:06,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:19:06,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:19:06,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:19:06,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:19:06,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:19:06,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:19:06,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:19:06,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:19:06,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:19:06,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:19:06,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:19:06,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:19:06,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:19:06,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:19:06,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:19:06,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:19:06,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:19:06,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:19:06,172 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:19:06,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:19:06,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:19:06,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:19:06,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:19:06,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:19:06,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:19:06,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:19:06,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:19:06,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:19:06,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:19:06,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:19:06,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:19:06,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:19:06,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:19:06,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:19:06,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:19:06,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:19:06,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:19:06,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:19:06,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:19:06,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:19:06,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:19:06,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:19:06,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:19:06,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:19:06,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:19:06,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:19:06,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:19:06,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:19:06,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:19:06,220 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:19:06,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:19:06,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:19:06,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:19:06,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:19:06,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:19:06,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:19:06,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:19:06,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:19:06,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:19:06,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:19:06,223 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:19:06,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:19:06,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:19:06,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 [2022-07-14 00:19:06,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:19:06,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:19:06,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:19:06,452 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:19:06,453 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:19:06,454 INFO L432 ainManager$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--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i [2022-07-14 00:19:06,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a329c1c/5f1b18eff0164cbaab6525939526e5d1/FLAG990cd2f14 [2022-07-14 00:19:07,118 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:19:07,119 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--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i [2022-07-14 00:19:07,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a329c1c/5f1b18eff0164cbaab6525939526e5d1/FLAG990cd2f14 [2022-07-14 00:19:07,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a329c1c/5f1b18eff0164cbaab6525939526e5d1 [2022-07-14 00:19:07,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:19:07,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:19:07,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:19:07,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:19:07,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:19:07,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:19:07" (1/1) ... [2022-07-14 00:19:07,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5153216b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:07, skipping insertion in model container [2022-07-14 00:19:07,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:19:07" (1/1) ... [2022-07-14 00:19:07,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:19:07,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:19:08,349 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--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i[209352,209365] [2022-07-14 00:19:09,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:19:09,164 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:19:09,330 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--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i[209352,209365] [2022-07-14 00:19:09,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:19:09,650 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:19:09,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09 WrapperNode [2022-07-14 00:19:09,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:19:09,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:19:09,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:19:09,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:19:09,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:09,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:09,898 INFO L137 Inliner]: procedures = 188, calls = 2240, calls flagged for inlining = 91, calls inlined = 86, statements flattened = 4997 [2022-07-14 00:19:09,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:19:09,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:19:09,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:19:09,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:19:09,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:09,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:09,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:09,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:10,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:10,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:10,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:10,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:19:10,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:19:10,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:19:10,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:19:10,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (1/1) ... [2022-07-14 00:19:10,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:19:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:19:10,225 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) [2022-07-14 00:19:10,231 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 [2022-07-14 00:19:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-14 00:19:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-14 00:19:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2022-07-14 00:19:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2022-07-14 00:19:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-14 00:19:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_host [2022-07-14 00:19:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_host [2022-07-14 00:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_to_card [2022-07-14 00:19:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_to_card [2022-07-14 00:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:19:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_get_host_pm_caps [2022-07-14 00:19:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_get_host_pm_caps [2022-07-14 00:19:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_sync [2022-07-14 00:19:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_sync [2022-07-14 00:19:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:19:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:19:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_card_to_host [2022-07-14 00:19:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_card_to_host [2022-07-14 00:19:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure mp_tx_aggr_port_limit_reached [2022-07-14 00:19:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_tx_aggr_port_limit_reached [2022-07-14 00:19:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:19:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:19:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-14 00:19:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-14 00:19:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2022-07-14 00:19:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2022-07-14 00:19:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-14 00:19:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-14 00:19:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:19:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:19:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-07-14 00:19:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-07-14 00:19:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2022-07-14 00:19:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2022-07-14 00:19:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:19:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2022-07-14 00:19:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2022-07-14 00:19:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:19:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:19:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_data_sync [2022-07-14 00:19:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_data_sync [2022-07-14 00:19:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:19:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:19:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-07-14 00:19:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:19:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:19:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:19:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 00:19:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 00:19:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-14 00:19:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-14 00:19:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:19:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_irq [2022-07-14 00:19:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_irq [2022-07-14 00:19:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_disable_func [2022-07-14 00:19:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_disable_func [2022-07-14 00:19:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:19:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:19:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_claim_host [2022-07-14 00:19:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_claim_host [2022-07-14 00:19:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg_locked [2022-07-14 00:19:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg_locked [2022-07-14 00:19:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_cmdrsp_complete [2022-07-14 00:19:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_cmdrsp_complete [2022-07-14 00:19:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:19:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-14 00:19:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-14 00:19:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-14 00:19:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:19:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-14 00:19:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-14 00:19:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:19:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-14 00:19:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-14 00:19:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-14 00:19:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-14 00:19:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-14 00:19:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-14 00:19:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-14 00:19:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-14 00:19:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-07-14 00:19:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-07-14 00:19:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:19:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_host_to_card_mp_aggr [2022-07-14 00:19:10,271 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_host_to_card_mp_aggr [2022-07-14 00:19:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_resume [2022-07-14 00:19:10,271 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_resume [2022-07-14 00:19:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-14 00:19:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2022-07-14 00:19:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:19:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:19:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_decode_rx_packet [2022-07-14 00:19:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_decode_rx_packet [2022-07-14 00:19:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:19:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:19:10,855 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:19:10,857 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:19:10,980 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:19:19,265 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:19:19,283 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:19:19,284 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-14 00:19:19,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:19:19 BoogieIcfgContainer [2022-07-14 00:19:19,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:19:19,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:19:19,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:19:19,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:19:19,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:19:07" (1/3) ... [2022-07-14 00:19:19,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef205c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:19:19, skipping insertion in model container [2022-07-14 00:19:19,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:09" (2/3) ... [2022-07-14 00:19:19,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef205c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:19:19, skipping insertion in model container [2022-07-14 00:19:19,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:19:19" (3/3) ... [2022-07-14 00:19:19,296 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i [2022-07-14 00:19:19,309 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:19:19,310 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:19:19,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:19:19,404 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@2803efbe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@125ba3b7 [2022-07-14 00:19:19,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:19:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 1121 states, 888 states have (on average 1.4617117117117118) internal successors, (1298), 901 states have internal predecessors, (1298), 192 states have call successors, (192), 40 states have call predecessors, (192), 39 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) [2022-07-14 00:19:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 00:19:19,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:19,431 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-14 00:19:19,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:19,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -67190774, now seen corresponding path program 1 times [2022-07-14 00:19:19,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:19:19,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692907496] [2022-07-14 00:19:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:19,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:19:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:19:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:19,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:19:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:19:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:19:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 00:19:19,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:19:19,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692907496] [2022-07-14 00:19:20,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692907496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:19:20,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:19:20,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:19:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950954930] [2022-07-14 00:19:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:19:20,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:19:20,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:19:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:19:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:19:20,029 INFO L87 Difference]: Start difference. First operand has 1121 states, 888 states have (on average 1.4617117117117118) internal successors, (1298), 901 states have internal predecessors, (1298), 192 states have call successors, (192), 40 states have call predecessors, (192), 39 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:19:22,238 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 [] [2022-07-14 00:19:27,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:29,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:19:30,514 INFO L93 Difference]: Finished difference Result 3392 states and 5178 transitions. [2022-07-14 00:19:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:19:30,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-07-14 00:19:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:19:30,540 INFO L225 Difference]: With dead ends: 3392 [2022-07-14 00:19:30,540 INFO L226 Difference]: Without dead ends: 2256 [2022-07-14 00:19:30,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:19:30,551 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 1828 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 421 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:19:30,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 4240 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 977 Invalid, 3 Unknown, 0 Unchecked, 10.2s Time] [2022-07-14 00:19:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-07-14 00:19:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2174. [2022-07-14 00:19:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 1734 states have (on average 1.4452133794694348) internal successors, (2506), 1744 states have internal predecessors, (2506), 363 states have call successors, (363), 77 states have call predecessors, (363), 76 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2022-07-14 00:19:30,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3231 transitions. [2022-07-14 00:19:30,718 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3231 transitions. Word has length 46 [2022-07-14 00:19:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:19:30,719 INFO L495 AbstractCegarLoop]: Abstraction has 2174 states and 3231 transitions. [2022-07-14 00:19:30,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:19:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3231 transitions. [2022-07-14 00:19:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 00:19:30,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:30,722 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-14 00:19:30,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:19:30,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1446790162, now seen corresponding path program 1 times [2022-07-14 00:19:30,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:19:30,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984967732] [2022-07-14 00:19:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:19:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:19:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:30,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:19:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:19:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:19:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 00:19:31,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:19:31,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984967732] [2022-07-14 00:19:31,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984967732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:19:31,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:19:31,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:19:31,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471682011] [2022-07-14 00:19:31,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:19:31,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:19:31,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:19:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:19:31,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:19:31,011 INFO L87 Difference]: Start difference. First operand 2174 states and 3231 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:19:33,120 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 [] [2022-07-14 00:19:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:19:38,206 INFO L93 Difference]: Finished difference Result 6659 states and 9955 transitions. [2022-07-14 00:19:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:19:38,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-07-14 00:19:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:19:38,225 INFO L225 Difference]: With dead ends: 6659 [2022-07-14 00:19:38,225 INFO L226 Difference]: Without dead ends: 4487 [2022-07-14 00:19:38,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:19:38,232 INFO L413 NwaCegarLoop]: 1987 mSDtfsCounter, 1885 mSDsluCounter, 5594 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 399 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 7581 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:19:38,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 7581 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1872 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-07-14 00:19:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2022-07-14 00:19:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4353. [2022-07-14 00:19:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 3473 states have (on average 1.4454362222862078) internal successors, (5020), 3495 states have internal predecessors, (5020), 721 states have call successors, (721), 153 states have call predecessors, (721), 158 states have return successors, (738), 720 states have call predecessors, (738), 720 states have call successors, (738) [2022-07-14 00:19:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 6479 transitions. [2022-07-14 00:19:38,346 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 6479 transitions. Word has length 46 [2022-07-14 00:19:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:19:38,346 INFO L495 AbstractCegarLoop]: Abstraction has 4353 states and 6479 transitions. [2022-07-14 00:19:38,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:19:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 6479 transitions. [2022-07-14 00:19:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-14 00:19:38,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:38,357 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-14 00:19:38,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:19:38,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:38,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash -668278364, now seen corresponding path program 1 times [2022-07-14 00:19:38,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:19:38,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088218724] [2022-07-14 00:19:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:38,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:19:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:19:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:19:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:19:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:19:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:19:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:19:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-14 00:19:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 00:19:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-14 00:19:38,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:19:38,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088218724] [2022-07-14 00:19:38,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088218724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:19:38,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:19:38,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:19:38,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807755197] [2022-07-14 00:19:38,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:19:38,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:19:38,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:19:38,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:19:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:19:38,661 INFO L87 Difference]: Start difference. First operand 4353 states and 6479 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-14 00:19:40,777 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 [] [2022-07-14 00:19:42,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:48,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:19:49,869 INFO L93 Difference]: Finished difference Result 7320 states and 10837 transitions. [2022-07-14 00:19:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:19:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2022-07-14 00:19:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:19:49,880 INFO L225 Difference]: With dead ends: 7320 [2022-07-14 00:19:49,881 INFO L226 Difference]: Without dead ends: 2979 [2022-07-14 00:19:49,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:19:49,890 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 556 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 233 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:19:49,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 4457 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1567 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-07-14 00:19:49,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-07-14 00:19:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2864. [2022-07-14 00:19:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2297 states have (on average 1.434479756203744) internal successors, (3295), 2310 states have internal predecessors, (3295), 446 states have call successors, (446), 118 states have call predecessors, (446), 120 states have return successors, (456), 443 states have call predecessors, (456), 445 states have call successors, (456) [2022-07-14 00:19:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4197 transitions. [2022-07-14 00:19:49,958 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4197 transitions. Word has length 105 [2022-07-14 00:19:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:19:49,959 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 4197 transitions. [2022-07-14 00:19:49,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-14 00:19:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4197 transitions. [2022-07-14 00:19:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-14 00:19:49,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:49,964 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2022-07-14 00:19:49,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:19:49,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1270465993, now seen corresponding path program 1 times [2022-07-14 00:19:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:19:49,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111409634] [2022-07-14 00:19:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:49,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:19:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:19:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:19:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:19:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:19:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:19:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:19:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:19:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:19:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:19:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:19:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:19:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-14 00:19:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-14 00:19:50,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:19:50,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111409634] [2022-07-14 00:19:50,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111409634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:19:50,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:19:50,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:19:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137383662] [2022-07-14 00:19:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:19:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:19:50,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:19:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:19:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:19:50,316 INFO L87 Difference]: Start difference. First operand 2864 states and 4197 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-14 00:19:52,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:56,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:57,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:58,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:19:58,561 INFO L93 Difference]: Finished difference Result 5606 states and 8247 transitions. [2022-07-14 00:19:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:19:58,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 146 [2022-07-14 00:19:58,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:19:58,574 INFO L225 Difference]: With dead ends: 5606 [2022-07-14 00:19:58,574 INFO L226 Difference]: Without dead ends: 2964 [2022-07-14 00:19:58,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:19:58,582 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 356 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 382 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 3743 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:19:58,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 3743 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 860 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-07-14 00:19:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-07-14 00:19:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2866. [2022-07-14 00:19:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2299 states have (on average 1.4341017833840801) internal successors, (3297), 2312 states have internal predecessors, (3297), 446 states have call successors, (446), 118 states have call predecessors, (446), 120 states have return successors, (456), 443 states have call predecessors, (456), 445 states have call successors, (456) [2022-07-14 00:19:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4199 transitions. [2022-07-14 00:19:58,646 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4199 transitions. Word has length 146 [2022-07-14 00:19:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:19:58,647 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4199 transitions. [2022-07-14 00:19:58,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-14 00:19:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4199 transitions. [2022-07-14 00:19:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-14 00:19:58,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:58,651 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2022-07-14 00:19:58,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 00:19:58,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1096228601, now seen corresponding path program 1 times [2022-07-14 00:19:58,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:19:58,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617467577] [2022-07-14 00:19:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:19:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:19:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:19:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:19:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:19:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:19:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:19:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:19:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:19:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:19:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:19:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:19:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-14 00:19:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-14 00:19:59,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:19:59,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617467577] [2022-07-14 00:19:59,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617467577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:19:59,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:19:59,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:19:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930580419] [2022-07-14 00:19:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:19:59,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:19:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:19:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:19:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:19:59,081 INFO L87 Difference]: Start difference. First operand 2866 states and 4199 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-14 00:20:01,191 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 [] [2022-07-14 00:20:03,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-14 00:20:07,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:20:08,715 INFO L93 Difference]: Finished difference Result 5600 states and 8246 transitions. [2022-07-14 00:20:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:20:08,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 146 [2022-07-14 00:20:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:20:08,729 INFO L225 Difference]: With dead ends: 5600 [2022-07-14 00:20:08,729 INFO L226 Difference]: Without dead ends: 2956 [2022-07-14 00:20:08,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:20:08,737 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 339 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 384 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 6400 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:20:08,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 6400 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1500 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2022-07-14 00:20:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-07-14 00:20:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2866. [2022-07-14 00:20:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2297 states have (on average 1.432738354375272) internal successors, (3291), 2311 states have internal predecessors, (3291), 446 states have call successors, (446), 118 states have call predecessors, (446), 122 states have return successors, (462), 444 states have call predecessors, (462), 445 states have call successors, (462) [2022-07-14 00:20:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4199 transitions. [2022-07-14 00:20:08,846 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4199 transitions. Word has length 146 [2022-07-14 00:20:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:20:08,847 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4199 transitions. [2022-07-14 00:20:08,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-14 00:20:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4199 transitions. [2022-07-14 00:20:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-14 00:20:08,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:20:08,856 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 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] [2022-07-14 00:20:08,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 00:20:08,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:20:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:20:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash -433239453, now seen corresponding path program 1 times [2022-07-14 00:20:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:20:08,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128860266] [2022-07-14 00:20:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:20:08,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:20:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:20:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:20:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:20:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:20:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:20:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:20:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:20:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:20:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:20:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:20:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:20:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-14 00:20:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:20:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:20:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:20:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-14 00:20:09,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:20:09,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128860266] [2022-07-14 00:20:09,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128860266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:20:09,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:20:09,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:20:09,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887234717] [2022-07-14 00:20:09,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:20:09,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:20:09,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:20:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:20:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:20:09,280 INFO L87 Difference]: Start difference. First operand 2866 states and 4199 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:20:11,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:13,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:17,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:19,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:25,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:27,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:28,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:30,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:20:31,618 INFO L93 Difference]: Finished difference Result 6857 states and 10248 transitions. [2022-07-14 00:20:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:20:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 153 [2022-07-14 00:20:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:20:31,632 INFO L225 Difference]: With dead ends: 6857 [2022-07-14 00:20:31,633 INFO L226 Difference]: Without dead ends: 4213 [2022-07-14 00:20:31,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:20:31,638 INFO L413 NwaCegarLoop]: 2217 mSDtfsCounter, 742 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 208 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 5910 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:20:31,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 5910 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1810 Invalid, 7 Unknown, 0 Unchecked, 22.2s Time] [2022-07-14 00:20:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2022-07-14 00:20:31,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 2882. [2022-07-14 00:20:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2311 states have (on average 1.4309822587624406) internal successors, (3307), 2325 states have internal predecessors, (3307), 448 states have call successors, (448), 118 states have call predecessors, (448), 122 states have return successors, (464), 446 states have call predecessors, (464), 447 states have call successors, (464) [2022-07-14 00:20:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4219 transitions. [2022-07-14 00:20:31,721 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4219 transitions. Word has length 153 [2022-07-14 00:20:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:20:31,722 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 4219 transitions. [2022-07-14 00:20:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:20:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4219 transitions. [2022-07-14 00:20:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-14 00:20:31,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:20:31,727 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 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] [2022-07-14 00:20:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 00:20:31,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:20:31,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:20:31,728 INFO L85 PathProgramCache]: Analyzing trace with hash 353482513, now seen corresponding path program 1 times [2022-07-14 00:20:31,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:20:31,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453038422] [2022-07-14 00:20:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:20:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:20:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:20:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:20:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:20:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:20:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:20:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:20:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:20:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:20:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:20:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:20:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:20:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-14 00:20:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:20:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:20:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:20:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:32,100 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-14 00:20:32,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:20:32,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453038422] [2022-07-14 00:20:32,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453038422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:20:32,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:20:32,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:20:32,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244155272] [2022-07-14 00:20:32,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:20:32,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:20:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:20:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:20:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:20:32,103 INFO L87 Difference]: Start difference. First operand 2882 states and 4219 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:20:34,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:36,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:41,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:43,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:47,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:49,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:53,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:55,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:58,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:00,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:02,367 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 [] [2022-07-14 00:21:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:21:03,673 INFO L93 Difference]: Finished difference Result 8302 states and 12566 transitions. [2022-07-14 00:21:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:21:03,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 154 [2022-07-14 00:21:03,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:21:03,754 INFO L225 Difference]: With dead ends: 8302 [2022-07-14 00:21:03,755 INFO L226 Difference]: Without dead ends: 5642 [2022-07-14 00:21:03,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:21:03,766 INFO L413 NwaCegarLoop]: 2521 mSDtfsCounter, 1613 mSDsluCounter, 5906 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 213 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 8427 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:21:03,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 8427 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2551 Invalid, 9 Unknown, 0 Unchecked, 31.3s Time] [2022-07-14 00:21:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2022-07-14 00:21:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 2882. [2022-07-14 00:21:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2311 states have (on average 1.4309822587624406) internal successors, (3307), 2325 states have internal predecessors, (3307), 448 states have call successors, (448), 118 states have call predecessors, (448), 122 states have return successors, (464), 446 states have call predecessors, (464), 447 states have call successors, (464) [2022-07-14 00:21:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4219 transitions. [2022-07-14 00:21:03,901 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4219 transitions. Word has length 154 [2022-07-14 00:21:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:21:03,902 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 4219 transitions. [2022-07-14 00:21:03,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:21:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4219 transitions. [2022-07-14 00:21:03,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-14 00:21:03,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:21:03,908 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 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] [2022-07-14 00:21:03,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 00:21:03,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:21:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:21:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash 343045352, now seen corresponding path program 1 times [2022-07-14 00:21:03,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:21:03,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123755956] [2022-07-14 00:21:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:21:03,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:21:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:21:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:21:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:21:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:21:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:21:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:21:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:21:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:21:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:21:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:21:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:21:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 00:21:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:21:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:21:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:21:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-14 00:21:04,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:21:04,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123755956] [2022-07-14 00:21:04,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123755956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:21:04,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:21:04,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:21:04,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978144958] [2022-07-14 00:21:04,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:21:04,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:21:04,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:21:04,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:21:04,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:21:04,244 INFO L87 Difference]: Start difference. First operand 2882 states and 4219 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:21:06,354 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 [] [2022-07-14 00:21:08,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:15,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:17,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:20,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:25,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:26,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:21:26,876 INFO L93 Difference]: Finished difference Result 6875 states and 10266 transitions. [2022-07-14 00:21:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:21:26,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 155 [2022-07-14 00:21:26,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:21:26,891 INFO L225 Difference]: With dead ends: 6875 [2022-07-14 00:21:26,891 INFO L226 Difference]: Without dead ends: 4215 [2022-07-14 00:21:26,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:21:26,899 INFO L413 NwaCegarLoop]: 2345 mSDtfsCounter, 1318 mSDsluCounter, 3850 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 301 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 6195 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:21:26,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 6195 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1898 Invalid, 6 Unknown, 0 Unchecked, 22.4s Time] [2022-07-14 00:21:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2022-07-14 00:21:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 2882. [2022-07-14 00:21:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2311 states have (on average 1.430116832540026) internal successors, (3305), 2325 states have internal predecessors, (3305), 448 states have call successors, (448), 118 states have call predecessors, (448), 122 states have return successors, (464), 446 states have call predecessors, (464), 447 states have call successors, (464) [2022-07-14 00:21:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4217 transitions. [2022-07-14 00:21:27,046 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4217 transitions. Word has length 155 [2022-07-14 00:21:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:21:27,046 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 4217 transitions. [2022-07-14 00:21:27,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:21:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4217 transitions. [2022-07-14 00:21:27,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-14 00:21:27,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:21:27,052 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 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] [2022-07-14 00:21:27,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 00:21:27,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:21:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:21:27,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1390479030, now seen corresponding path program 1 times [2022-07-14 00:21:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:21:27,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491106732] [2022-07-14 00:21:27,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:21:27,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:21:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:21:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:21:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:21:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:21:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:21:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:21:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:21:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:21:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:21:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:21:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:21:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-14 00:21:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:21:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:21:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:21:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-14 00:21:30,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:21:30,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491106732] [2022-07-14 00:21:30,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491106732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:21:30,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:21:30,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-14 00:21:30,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885675136] [2022-07-14 00:21:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:21:30,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 00:21:30,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:21:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 00:21:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-14 00:21:30,871 INFO L87 Difference]: Start difference. First operand 2882 states and 4217 transitions. Second operand has 17 states, 16 states have (on average 6.3125) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:21:33,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:38,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:40,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:42,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:47,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:51,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:21:54,807 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 [] [2022-07-14 00:21:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:21:55,644 INFO L93 Difference]: Finished difference Result 7143 states and 10715 transitions. [2022-07-14 00:21:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 00:21:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.3125) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 156 [2022-07-14 00:21:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:21:55,657 INFO L225 Difference]: With dead ends: 7143 [2022-07-14 00:21:55,657 INFO L226 Difference]: Without dead ends: 4483 [2022-07-14 00:21:55,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-07-14 00:21:55,663 INFO L413 NwaCegarLoop]: 2530 mSDtfsCounter, 1089 mSDsluCounter, 29142 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 398 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 31672 SdHoareTripleChecker+Invalid, 6406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:21:55,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 31672 Invalid, 6406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [398 Valid, 6001 Invalid, 7 Unknown, 0 Unchecked, 24.2s Time] [2022-07-14 00:21:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4483 states. [2022-07-14 00:21:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4483 to 2889. [2022-07-14 00:21:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2317 states have (on average 1.428139835994821) internal successors, (3309), 2329 states have internal predecessors, (3309), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 449 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-14 00:21:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4223 transitions. [2022-07-14 00:21:55,812 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4223 transitions. Word has length 156 [2022-07-14 00:21:55,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:21:55,812 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 4223 transitions. [2022-07-14 00:21:55,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.3125) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:21:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4223 transitions. [2022-07-14 00:21:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-14 00:21:55,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:21:55,819 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 4, 4, 3, 3, 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] [2022-07-14 00:21:55,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 00:21:55,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:21:55,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:21:55,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2040464555, now seen corresponding path program 1 times [2022-07-14 00:21:55,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:21:55,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991212060] [2022-07-14 00:21:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:21:55,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:21:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:21:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:21:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:21:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:21:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:21:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:21:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:21:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:21:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:21:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:21:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:21:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 00:21:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 00:21:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 00:21:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:21:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-14 00:21:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:21:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:21:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:21:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:21:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-14 00:21:56,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:21:56,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991212060] [2022-07-14 00:21:56,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991212060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:21:56,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:21:56,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:21:56,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72619749] [2022-07-14 00:21:56,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:21:56,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:21:56,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:21:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:21:56,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:21:56,260 INFO L87 Difference]: Start difference. First operand 2889 states and 4223 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-14 00:21:58,368 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 [] [2022-07-14 00:22:03,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:06,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:07,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:22:07,562 INFO L93 Difference]: Finished difference Result 8363 states and 12653 transitions. [2022-07-14 00:22:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:22:07,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 195 [2022-07-14 00:22:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:22:07,578 INFO L225 Difference]: With dead ends: 8363 [2022-07-14 00:22:07,578 INFO L226 Difference]: Without dead ends: 5696 [2022-07-14 00:22:07,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:22:07,586 INFO L413 NwaCegarLoop]: 2628 mSDtfsCounter, 2192 mSDsluCounter, 5099 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 596 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 7727 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:22:07,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2326 Valid, 7727 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 1542 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-07-14 00:22:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2022-07-14 00:22:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 2893. [2022-07-14 00:22:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2321 states have (on average 1.4274019819043515) internal successors, (3313), 2333 states have internal predecessors, (3313), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 449 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-14 00:22:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4227 transitions. [2022-07-14 00:22:07,766 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4227 transitions. Word has length 195 [2022-07-14 00:22:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:22:07,767 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4227 transitions. [2022-07-14 00:22:07,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-14 00:22:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4227 transitions. [2022-07-14 00:22:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-14 00:22:07,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:22:07,775 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 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] [2022-07-14 00:22:07,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 00:22:07,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:22:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:22:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1987154174, now seen corresponding path program 1 times [2022-07-14 00:22:07,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:22:07,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671919844] [2022-07-14 00:22:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:22:07,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:22:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:22:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:22:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:22:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:22:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:22:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:22:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:22:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:22:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:22:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:22:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:22:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 00:22:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 00:22:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 00:22:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:22:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-14 00:22:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:22:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:22:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:22:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:22:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-14 00:22:08,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:22:08,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671919844] [2022-07-14 00:22:08,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671919844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:22:08,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:22:08,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:22:08,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908910787] [2022-07-14 00:22:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:22:08,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:22:08,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:22:08,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:22:08,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:22:08,261 INFO L87 Difference]: Start difference. First operand 2893 states and 4227 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-14 00:22:10,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:17,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:19,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:21,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:22:22,269 INFO L93 Difference]: Finished difference Result 8323 states and 12578 transitions. [2022-07-14 00:22:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:22:22,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 205 [2022-07-14 00:22:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:22:22,287 INFO L225 Difference]: With dead ends: 8323 [2022-07-14 00:22:22,288 INFO L226 Difference]: Without dead ends: 5652 [2022-07-14 00:22:22,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:22:22,297 INFO L413 NwaCegarLoop]: 3160 mSDtfsCounter, 1784 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 520 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 7133 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:22:22,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 7133 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 1445 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-07-14 00:22:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2022-07-14 00:22:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 2893. [2022-07-14 00:22:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2321 states have (on average 1.4274019819043515) internal successors, (3313), 2333 states have internal predecessors, (3313), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 449 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-14 00:22:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4227 transitions. [2022-07-14 00:22:22,514 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4227 transitions. Word has length 205 [2022-07-14 00:22:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:22:22,515 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4227 transitions. [2022-07-14 00:22:22,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-14 00:22:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4227 transitions. [2022-07-14 00:22:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-14 00:22:22,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:22:22,522 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 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] [2022-07-14 00:22:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 00:22:22,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:22:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:22:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1630257905, now seen corresponding path program 1 times [2022-07-14 00:22:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:22:22,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543413806] [2022-07-14 00:22:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:22:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:22:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:22:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:22:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:22:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:22:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:22:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:22:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:22:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:22:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:22:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:22:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:22:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 00:22:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 00:22:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 00:22:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:22:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-14 00:22:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-14 00:22:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:22:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:22:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:22:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-14 00:22:22,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:22:22,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543413806] [2022-07-14 00:22:22,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543413806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:22:22,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:22:22,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:22:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956086425] [2022-07-14 00:22:22,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:22:22,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:22:22,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:22:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:22:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:22:22,952 INFO L87 Difference]: Start difference. First operand 2893 states and 4227 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 00:22:25,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:33,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:22:34,103 INFO L93 Difference]: Finished difference Result 6896 states and 10280 transitions. [2022-07-14 00:22:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:22:34,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 206 [2022-07-14 00:22:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:22:34,114 INFO L225 Difference]: With dead ends: 6896 [2022-07-14 00:22:34,114 INFO L226 Difference]: Without dead ends: 4225 [2022-07-14 00:22:34,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:22:34,120 INFO L413 NwaCegarLoop]: 2290 mSDtfsCounter, 909 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 395 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 6341 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:22:34,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 6341 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1397 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2022-07-14 00:22:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2022-07-14 00:22:34,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 2893. [2022-07-14 00:22:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2321 states have (on average 1.4265402843601895) internal successors, (3311), 2333 states have internal predecessors, (3311), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 449 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-14 00:22:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4225 transitions. [2022-07-14 00:22:34,274 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4225 transitions. Word has length 206 [2022-07-14 00:22:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:22:34,275 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4225 transitions. [2022-07-14 00:22:34,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 00:22:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4225 transitions. [2022-07-14 00:22:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-14 00:22:34,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:22:34,282 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 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] [2022-07-14 00:22:34,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 00:22:34,283 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:22:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:22:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1037721725, now seen corresponding path program 1 times [2022-07-14 00:22:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:22:34,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127339439] [2022-07-14 00:22:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:22:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:22:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:22:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:22:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:22:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:22:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:22:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:22:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:22:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:22:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:22:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:22:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:22:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 00:22:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-14 00:22:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 00:22:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:22:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:22:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 00:22:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:22:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:22:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:22:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:22:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-14 00:22:37,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:22:37,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127339439] [2022-07-14 00:22:37,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127339439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:22:37,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:22:37,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-14 00:22:37,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301725521] [2022-07-14 00:22:37,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:22:37,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 00:22:37,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:22:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 00:22:37,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-14 00:22:37,932 INFO L87 Difference]: Start difference. First operand 2893 states and 4225 transitions. Second operand has 17 states, 16 states have (on average 8.375) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 00:22:40,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:46,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:48,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:50,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:52,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:22:59,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:23:03,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:23:05,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:23:10,711 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 [] [2022-07-14 00:23:11,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:23:11,190 INFO L93 Difference]: Finished difference Result 7254 states and 10841 transitions. [2022-07-14 00:23:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 00:23:11,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 8.375) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) Word has length 207 [2022-07-14 00:23:11,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:23:11,203 INFO L225 Difference]: With dead ends: 7254 [2022-07-14 00:23:11,203 INFO L226 Difference]: Without dead ends: 4583 [2022-07-14 00:23:11,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2022-07-14 00:23:11,211 INFO L413 NwaCegarLoop]: 2536 mSDtfsCounter, 957 mSDsluCounter, 28153 mSDsCounter, 0 mSdLazyCounter, 6619 mSolverCounterSat, 207 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 30689 SdHoareTripleChecker+Invalid, 6835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 6619 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:23:11,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 30689 Invalid, 6835 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 6619 Invalid, 9 Unknown, 0 Unchecked, 32.7s Time] [2022-07-14 00:23:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2022-07-14 00:23:11,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 2897. [2022-07-14 00:23:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2325 states have (on average 1.4258064516129032) internal successors, (3315), 2335 states have internal predecessors, (3315), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 451 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-14 00:23:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4229 transitions. [2022-07-14 00:23:11,386 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4229 transitions. Word has length 207 [2022-07-14 00:23:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:23:11,388 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 4229 transitions. [2022-07-14 00:23:11,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 8.375) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 00:23:11,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4229 transitions. [2022-07-14 00:23:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-14 00:23:11,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:23:11,395 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 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] [2022-07-14 00:23:11,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 00:23:11,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:23:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:23:11,396 INFO L85 PathProgramCache]: Analyzing trace with hash -724420287, now seen corresponding path program 1 times [2022-07-14 00:23:11,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:23:11,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747155989] [2022-07-14 00:23:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:23:11,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:23:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:23:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:23:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:23:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:23:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:23:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:23:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:23:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:23:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:23:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:23:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 00:23:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-14 00:23:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:23:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:23:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:23:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:23:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-14 00:23:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-14 00:23:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:23:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:23:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-14 00:23:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:23:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-14 00:23:11,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:23:11,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747155989] [2022-07-14 00:23:11,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747155989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:23:11,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:23:11,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 00:23:11,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265486675] [2022-07-14 00:23:11,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:23:11,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:23:11,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:23:11,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:23:11,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:23:11,794 INFO L87 Difference]: Start difference. First operand 2897 states and 4229 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:23:13,958 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 [] [2022-07-14 00:23:15,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []