./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.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 9a12ad8c8f82d9497d9fb295ce6f252aae97c90123ce998a3f7bb078893d44d4 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:11:16,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:11:16,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:11:16,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:11:16,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:11:16,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:11:16,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:11:16,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:11:16,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:11:16,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:11:16,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:11:16,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:11:16,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:11:16,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:11:16,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:11:16,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:11:16,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:11:16,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:11:16,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:11:16,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:11:16,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:11:16,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:11:16,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:11:16,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:11:16,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:11:16,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:11:16,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:11:16,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:11:16,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:11:16,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:11:16,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:11:16,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:11:16,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:11:16,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:11:16,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:11:16,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:11:16,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:11:16,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:11:16,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:11:16,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:11:16,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:11:16,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:11:16,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:11:16,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:11:16,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:11:16,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:11:16,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:11:16,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:11:16,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:11:16,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:11:16,233 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:11:16,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:11:16,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:11:16,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:11:16,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:11:16,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:11:16,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:11:16,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:11:16,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:11:16,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:11:16,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:11:16,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:11:16,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:11:16,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:11:16,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:11:16,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:11:16,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:11:16,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:11:16,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:11:16,238 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:11:16,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:11:16,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:11:16,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:11:16,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a12ad8c8f82d9497d9fb295ce6f252aae97c90123ce998a3f7bb078893d44d4 [2021-12-14 18:11:16,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:11:16,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:11:16,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:11:16,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:11:16,544 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:11:16,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2021-12-14 18:11:16,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda3d2a78/b12060ed9abb48f9a940d5db6655ff4a/FLAG05716cb06 [2021-12-14 18:11:17,324 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:11:17,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2021-12-14 18:11:17,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda3d2a78/b12060ed9abb48f9a940d5db6655ff4a/FLAG05716cb06 [2021-12-14 18:11:17,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda3d2a78/b12060ed9abb48f9a940d5db6655ff4a [2021-12-14 18:11:17,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:11:17,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:11:17,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:11:17,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:11:17,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:11:17,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:11:17" (1/1) ... [2021-12-14 18:11:17,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239b078d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:17, skipping insertion in model container [2021-12-14 18:11:17,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:11:17" (1/1) ... [2021-12-14 18:11:17,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:11:17,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:11:18,864 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i[240484,240497] [2021-12-14 18:11:18,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:11:19,001 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:11:19,323 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i[240484,240497] [2021-12-14 18:11:19,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:11:19,400 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:11:19,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19 WrapperNode [2021-12-14 18:11:19,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:11:19,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:11:19,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:11:19,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:11:19,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,591 INFO L137 Inliner]: procedures = 250, calls = 2028, calls flagged for inlining = 112, calls inlined = 108, statements flattened = 4557 [2021-12-14 18:11:19,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:11:19,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:11:19,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:11:19,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:11:19,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:11:19,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:11:19,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:11:19,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:11:19,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (1/1) ... [2021-12-14 18:11:19,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:11:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:11:19,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:11:19,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:11:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:11:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:11:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:11:19,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:11:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure initio_status_msg [2021-12-14 18:11:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_status_msg [2021-12-14 18:11:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:11:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:11:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure initio_select_atn_stop [2021-12-14 18:11:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_select_atn_stop [2021-12-14 18:11:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin_accept [2021-12-14 18:11:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin_accept [2021-12-14 18:11:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure initio_remove_one [2021-12-14 18:11:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_remove_one [2021-12-14 18:11:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:11:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:11:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2021-12-14 18:11:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2021-12-14 18:11:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 18:11:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 18:11:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_scsi_rst [2021-12-14 18:11:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_scsi_rst [2021-12-14 18:11:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure initio_abort_srb [2021-12-14 18:11:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_abort_srb [2021-12-14 18:11:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:11:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:11:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2021-12-14 18:11:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2021-12-14 18:11:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 18:11:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 18:11:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure initio_next_state [2021-12-14 18:11:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_next_state [2021-12-14 18:11:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:11:19,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:11:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:11:19,884 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:11:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure initio_unlink_pend_scb [2021-12-14 18:11:19,885 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_unlink_pend_scb [2021-12-14 18:11:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 18:11:19,885 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 18:11:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_busy_scb [2021-12-14 18:11:19,885 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_busy_scb [2021-12-14 18:11:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-12-14 18:11:19,885 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-12-14 18:11:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:11:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_reject [2021-12-14 18:11:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_reject [2021-12-14 18:11:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:11:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure initio_se2_rd_all [2021-12-14 18:11:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_se2_rd_all [2021-12-14 18:11:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:11:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:11:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:11:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:11:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure initio_release_scb [2021-12-14 18:11:19,887 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_release_scb [2021-12-14 18:11:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_scsi [2021-12-14 18:11:19,888 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_scsi [2021-12-14 18:11:19,888 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 18:11:19,889 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 18:11:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-14 18:11:19,889 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-14 18:11:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-14 18:11:19,889 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-14 18:11:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:11:19,889 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 18:11:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 18:11:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_targ [2021-12-14 18:11:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_targ [2021-12-14 18:11:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 18:11:19,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 18:11:19,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:11:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure initio_se2_instr [2021-12-14 18:11:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_se2_instr [2021-12-14 18:11:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:11:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure initio_find_first_pend_scb [2021-12-14 18:11:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_find_first_pend_scb [2021-12-14 18:11:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 18:11:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 18:11:19,891 INFO L130 BoogieDeclarations]: Found specification of procedure initio_unlink_busy_scb [2021-12-14 18:11:19,891 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_unlink_busy_scb [2021-12-14 18:11:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure initio_wait_done_disc [2021-12-14 18:11:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_wait_done_disc [2021-12-14 18:11:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-14 18:11:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-14 18:11:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:11:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 18:11:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 18:11:19,892 INFO L130 BoogieDeclarations]: Found specification of procedure initio_stop_bm [2021-12-14 18:11:19,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_stop_bm [2021-12-14 18:11:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-14 18:11:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-14 18:11:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure wait_tulip [2021-12-14 18:11:19,893 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_tulip [2021-12-14 18:11:19,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:11:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:11:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure initio_pop_busy_scb [2021-12-14 18:11:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_pop_busy_scb [2021-12-14 18:11:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure initio_bad_seq [2021-12-14 18:11:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_bad_seq [2021-12-14 18:11:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:11:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:11:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_resel [2021-12-14 18:11:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_resel [2021-12-14 18:11:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:11:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-12-14 18:11:19,896 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-12-14 18:11:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:11:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_tag [2021-12-14 18:11:19,896 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_tag [2021-12-14 18:11:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:11:19,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:11:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:11:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:11:19,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:11:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-12-14 18:11:19,897 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-12-14 18:11:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure initio_reset_scsi [2021-12-14 18:11:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_reset_scsi [2021-12-14 18:11:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_done_scb [2021-12-14 18:11:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_done_scb [2021-12-14 18:11:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_pend_scb [2021-12-14 18:11:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_pend_scb [2021-12-14 18:11:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin [2021-12-14 18:11:19,901 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin [2021-12-14 18:11:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-14 18:11:19,901 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-14 18:11:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_main [2021-12-14 18:11:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_main [2021-12-14 18:11:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:11:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 18:11:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 18:11:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_busfree [2021-12-14 18:11:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_busfree [2021-12-14 18:11:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure initio_sync_done [2021-12-14 18:11:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_sync_done [2021-12-14 18:11:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure initio_wait_disc [2021-12-14 18:11:19,907 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_wait_disc [2021-12-14 18:11:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:11:19,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:11:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-12-14 18:11:19,907 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-12-14 18:11:20,585 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:11:20,588 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:11:20,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:11:23,761 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:11:23,776 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:11:23,777 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:11:23,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:11:23 BoogieIcfgContainer [2021-12-14 18:11:23,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:11:23,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:11:23,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:11:23,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:11:23,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:11:17" (1/3) ... [2021-12-14 18:11:23,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35414686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:11:23, skipping insertion in model container [2021-12-14 18:11:23,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:11:19" (2/3) ... [2021-12-14 18:11:23,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35414686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:11:23, skipping insertion in model container [2021-12-14 18:11:23,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:11:23" (3/3) ... [2021-12-14 18:11:23,788 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2021-12-14 18:11:23,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:11:23,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:11:23,869 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:11:23,874 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:11:23,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:11:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 1799 states, 1216 states have (on average 1.3338815789473684) internal successors, (1622), 1253 states have internal predecessors, (1622), 519 states have call successors, (519), 63 states have call predecessors, (519), 62 states have return successors, (513), 507 states have call predecessors, (513), 513 states have call successors, (513) [2021-12-14 18:11:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 18:11:23,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:11:23,927 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:11:23,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:11:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:11:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1180646586, now seen corresponding path program 1 times [2021-12-14 18:11:23,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:11:23,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300947594] [2021-12-14 18:11:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:11:23,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:11:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:11:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:11:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:11:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:11:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:11:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:11:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:11:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:11:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:11:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:11:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:11:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:11:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:11:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:11:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 18:11:24,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:11:24,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300947594] [2021-12-14 18:11:24,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300947594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:11:24,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:11:24,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:11:24,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639869977] [2021-12-14 18:11:24,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:11:24,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:11:24,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:11:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:11:24,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:11:24,578 INFO L87 Difference]: Start difference. First operand has 1799 states, 1216 states have (on average 1.3338815789473684) internal successors, (1622), 1253 states have internal predecessors, (1622), 519 states have call successors, (519), 63 states have call predecessors, (519), 62 states have return successors, (513), 507 states have call predecessors, (513), 513 states have call successors, (513) Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 18:11:27,712 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 [] [2021-12-14 18:11:29,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:11:35,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:11:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:11:36,484 INFO L93 Difference]: Finished difference Result 3894 states and 5814 transitions. [2021-12-14 18:11:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:11:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2021-12-14 18:11:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:11:36,523 INFO L225 Difference]: With dead ends: 3894 [2021-12-14 18:11:36,523 INFO L226 Difference]: Without dead ends: 2084 [2021-12-14 18:11:36,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:11:36,539 INFO L933 BasicCegarLoop]: 2053 mSDtfsCounter, 1989 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1578 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 7101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1578 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-12-14 18:11:36,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 3182 Invalid, 7101 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1578 Valid, 5521 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2021-12-14 18:11:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-12-14 18:11:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1783. [2021-12-14 18:11:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1208 states have (on average 1.326158940397351) internal successors, (1602), 1237 states have internal predecessors, (1602), 513 states have call successors, (513), 62 states have call predecessors, (513), 61 states have return successors, (510), 504 states have call predecessors, (510), 510 states have call successors, (510) [2021-12-14 18:11:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2625 transitions. [2021-12-14 18:11:36,742 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2625 transitions. Word has length 93 [2021-12-14 18:11:36,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:11:36,743 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 2625 transitions. [2021-12-14 18:11:36,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 18:11:36,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2625 transitions. [2021-12-14 18:11:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 18:11:36,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:11:36,753 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:11:36,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:11:36,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:11:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:11:36,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1336409410, now seen corresponding path program 1 times [2021-12-14 18:11:36,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:11:36,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044035940] [2021-12-14 18:11:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:11:36,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:11:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:11:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:11:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:11:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:11:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:11:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:11:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:11:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:11:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:11:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:11:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:11:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:11:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:37,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:11:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:11:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:11:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 18:11:37,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:11:37,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044035940] [2021-12-14 18:11:37,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044035940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:11:37,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:11:37,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:11:37,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146244767] [2021-12-14 18:11:37,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:11:37,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:11:37,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:11:37,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:11:37,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:11:37,030 INFO L87 Difference]: Start difference. First operand 1783 states and 2625 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-14 18:11:40,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:11:42,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:11:44,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:11:46,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:11:55,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:11:57,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:11:59,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:12:02,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:12:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:12:04,008 INFO L93 Difference]: Finished difference Result 5900 states and 8799 transitions. [2021-12-14 18:12:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 18:12:04,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 93 [2021-12-14 18:12:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:12:04,030 INFO L225 Difference]: With dead ends: 5900 [2021-12-14 18:12:04,030 INFO L226 Difference]: Without dead ends: 4133 [2021-12-14 18:12:04,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-14 18:12:04,040 INFO L933 BasicCegarLoop]: 2436 mSDtfsCounter, 5546 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 10047 mSolverCounterSat, 4380 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6007 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 14433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4380 IncrementalHoareTripleChecker+Valid, 10047 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2021-12-14 18:12:04,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6007 Valid, 4461 Invalid, 14433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4380 Valid, 10047 Invalid, 6 Unknown, 0 Unchecked, 26.5s Time] [2021-12-14 18:12:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2021-12-14 18:12:04,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3531. [2021-12-14 18:12:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 2392 states have (on average 1.3269230769230769) internal successors, (3174), 2448 states have internal predecessors, (3174), 1016 states have call successors, (1016), 123 states have call predecessors, (1016), 122 states have return successors, (1013), 1001 states have call predecessors, (1013), 1013 states have call successors, (1013) [2021-12-14 18:12:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 5203 transitions. [2021-12-14 18:12:04,265 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 5203 transitions. Word has length 93 [2021-12-14 18:12:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:12:04,267 INFO L470 AbstractCegarLoop]: Abstraction has 3531 states and 5203 transitions. [2021-12-14 18:12:04,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-14 18:12:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 5203 transitions. [2021-12-14 18:12:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 18:12:04,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:12:04,270 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:12:04,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:12:04,271 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:12:04,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:12:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1883856890, now seen corresponding path program 1 times [2021-12-14 18:12:04,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:12:04,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905237806] [2021-12-14 18:12:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:12:04,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:12:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:12:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:12:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:12:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:12:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:12:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:12:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:12:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:12:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:12:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:12:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:12:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:12:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:12:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:12:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 18:12:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:12:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:12:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:12:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-14 18:12:04,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:12:04,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905237806] [2021-12-14 18:12:04,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905237806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:12:04,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:12:04,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:12:04,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025620883] [2021-12-14 18:12:04,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:12:04,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:12:04,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:12:04,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:12:04,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:12:04,521 INFO L87 Difference]: Start difference. First operand 3531 states and 5203 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-14 18:12:06,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:12:08,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:12:12,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:12:14,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:12:15,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:12:22,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:12:24,341 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 []