./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--usb--class--cdc-wdm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:15:03,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:15:03,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:15:03,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:15:03,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:15:03,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:15:03,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:15:03,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:15:03,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:15:03,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:15:03,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:15:03,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:15:03,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:15:03,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:15:03,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:15:03,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:15:03,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:15:03,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:15:03,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:15:03,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:15:03,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:15:03,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:15:03,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:15:03,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:15:03,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:15:03,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:15:03,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:15:03,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:15:03,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:15:03,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:15:03,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:15:03,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:15:03,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:15:03,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:15:03,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:15:03,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:15:03,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:15:03,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:15:03,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:15:03,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:15:03,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:15:03,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:15:03,763 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:15:03,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:15:03,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:15:03,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:15:03,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:15:03,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:15:03,766 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:15:03,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:15:03,767 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:15:03,767 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:15:03,768 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:15:03,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:15:03,768 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:15:03,769 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:15:03,769 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:15:03,769 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:15:03,769 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:15:03,770 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:15:03,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:15:03,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:15:03,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:15:03,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:15:03,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:15:03,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:15:03,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:15:03,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:15:03,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:15:03,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:15:03,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:15:03,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:15:03,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:15:03,775 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:15:03,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:15:03,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:15:03,776 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:15:03,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:15:03,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:15:03,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:15:03,777 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e [2022-10-17 17:15:04,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:15:04,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:15:04,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:15:04,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:15:04,172 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:15:04,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-10-17 17:15:04,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/data/94b0eb31c/5209167f063e46fa9ab63142c2467d22/FLAG819e66b98 [2022-10-17 17:15:05,145 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:15:05,146 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-10-17 17:15:05,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/data/94b0eb31c/5209167f063e46fa9ab63142c2467d22/FLAG819e66b98 [2022-10-17 17:15:05,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/data/94b0eb31c/5209167f063e46fa9ab63142c2467d22 [2022-10-17 17:15:05,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:15:05,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:15:05,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:15:05,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:15:05,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:15:05,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:15:05" (1/1) ... [2022-10-17 17:15:05,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686dfd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:05, skipping insertion in model container [2022-10-17 17:15:05,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:15:05" (1/1) ... [2022-10-17 17:15:05,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:15:05,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:15:07,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2022-10-17 17:15:07,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:15:07,643 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:15:07,938 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2022-10-17 17:15:07,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:15:08,079 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:15:08,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08 WrapperNode [2022-10-17 17:15:08,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:15:08,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:15:08,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:15:08,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:15:08,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,347 INFO L138 Inliner]: procedures = 282, calls = 1375, calls flagged for inlining = 101, calls inlined = 84, statements flattened = 2589 [2022-10-17 17:15:08,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:15:08,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:15:08,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:15:08,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:15:08,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:15:08,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:15:08,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:15:08,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:15:08,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (1/1) ... [2022-10-17 17:15:08,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:15:08,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:15:08,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:15:08,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9916c0bc-e49d-4d70-a0b1-6df0e8c15c2a/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:15:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-17 17:15:08,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-17 17:15:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-10-17 17:15:08,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-10-17 17:15:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:15:08,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:15:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:15:08,729 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:15:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wdm_mutex [2022-10-17 17:15:08,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wdm_mutex [2022-10-17 17:15:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure recover_from_urb_loss [2022-10-17 17:15:08,729 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_from_urb_loss [2022-10-17 17:15:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-10-17 17:15:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-10-17 17:15:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:15:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:15:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-10-17 17:15:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-10-17 17:15:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-10-17 17:15:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-10-17 17:15:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-10-17 17:15:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-10-17 17:15:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_create [2022-10-17 17:15:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_create [2022-10-17 17:15:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 17:15:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 17:15:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:15:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:15:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_poll [2022-10-17 17:15:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_poll [2022-10-17 17:15:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-10-17 17:15:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-10-17 17:15:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:15:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:15:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 17:15:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 17:15:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:15:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:15:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure clear_wdm_read_flag [2022-10-17 17:15:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_wdm_read_flag [2022-10-17 17:15:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cancel_work_sync_39 [2022-10-17 17:15:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cancel_work_sync_39 [2022-10-17 17:15:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_write [2022-10-17 17:15:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_write [2022-10-17 17:15:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:15:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-17 17:15:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-17 17:15:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_ioctl [2022-10-17 17:15:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_ioctl [2022-10-17 17:15:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_disconnect [2022-10-17 17:15:08,738 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_disconnect [2022-10-17 17:15:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:15:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_rlock_of_wdm_device [2022-10-17 17:15:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_rlock_of_wdm_device [2022-10-17 17:15:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:15:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:15:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-10-17 17:15:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-10-17 17:15:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_rxwork [2022-10-17 17:15:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_rxwork [2022-10-17 17:15:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:15:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2022-10-17 17:15:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2022-10-17 17:15:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:15:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-10-17 17:15:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-10-17 17:15:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-10-17 17:15:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-10-17 17:15:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-10-17 17:15:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-10-17 17:15:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-10-17 17:15:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-10-17 17:15:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-10-17 17:15:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-10-17 17:15:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 17:15:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 17:15:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 17:15:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 17:15:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wdm_mutex [2022-10-17 17:15:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wdm_mutex [2022-10-17 17:15:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wlock_of_wdm_device [2022-10-17 17:15:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wlock_of_wdm_device [2022-10-17 17:15:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 17:15:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 17:15:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-10-17 17:15:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-10-17 17:15:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-17 17:15:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-17 17:15:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_flush [2022-10-17 17:15:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_flush [2022-10-17 17:15:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wlock_of_wdm_device [2022-10-17 17:15:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wlock_of_wdm_device [2022-10-17 17:15:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-17 17:15:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-17 17:15:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:15:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-10-17 17:15:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-10-17 17:15:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:15:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 17:15:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 17:15:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-17 17:15:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-17 17:15:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-17 17:15:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-17 17:15:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure kill_urbs [2022-10-17 17:15:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_urbs [2022-10-17 17:15:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-10-17 17:15:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-10-17 17:15:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 17:15:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 17:15:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:15:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-10-17 17:15:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-10-17 17:15:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-10-17 17:15:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-10-17 17:15:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:15:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:15:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 17:15:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 17:15:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_resume [2022-10-17 17:15:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_resume [2022-10-17 17:15:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:15:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-10-17 17:15:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-10-17 17:15:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-10-17 17:15:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-10-17 17:15:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:15:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-17 17:15:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-17 17:15:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:15:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-10-17 17:15:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-10-17 17:15:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-17 17:15:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-17 17:15:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-17 17:15:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-17 17:15:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 17:15:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 17:15:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_rlock_of_wdm_device [2022-10-17 17:15:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_rlock_of_wdm_device [2022-10-17 17:15:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-10-17 17:15:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-10-17 17:15:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_find_device [2022-10-17 17:15:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_find_device [2022-10-17 17:15:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-17 17:15:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-17 17:15:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-17 17:15:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-17 17:15:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:15:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-17 17:15:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-17 17:15:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-10-17 17:15:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-10-17 17:15:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:15:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:15:09,432 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:15:09,438 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:15:10,028 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:15:14,392 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:15:15,123 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:15:15,124 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:15:15,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:15:15 BoogieIcfgContainer [2022-10-17 17:15:15,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:15:15,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:15:15,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:15:15,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:15:15,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:15:05" (1/3) ... [2022-10-17 17:15:15,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677ea5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:15:15, skipping insertion in model container [2022-10-17 17:15:15,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:15:08" (2/3) ... [2022-10-17 17:15:15,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677ea5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:15:15, skipping insertion in model container [2022-10-17 17:15:15,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:15:15" (3/3) ... [2022-10-17 17:15:15,139 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2022-10-17 17:15:15,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:15:15,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:15:15,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:15:15,268 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=FINITE_AUTOMATA, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b7f32f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:15:15,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:15:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 861 states, 488 states have (on average 1.3176229508196722) internal successors, (643), 521 states have internal predecessors, (643), 301 states have call successors, (301), 71 states have call predecessors, (301), 70 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2022-10-17 17:15:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-10-17 17:15:15,301 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:15:15,302 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:15:15,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:15:15,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:15:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1163689236, now seen corresponding path program 1 times [2022-10-17 17:15:15,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:15:15,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841900463] [2022-10-17 17:15:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:15:15,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:15:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:15:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-10-17 17:15:16,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:15:16,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841900463] [2022-10-17 17:15:16,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841900463] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:15:16,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:15:16,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:15:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861372803] [2022-10-17 17:15:16,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:15:16,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:15:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:15:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:15:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:15:16,418 INFO L87 Difference]: Start difference. First operand has 861 states, 488 states have (on average 1.3176229508196722) internal successors, (643), 521 states have internal predecessors, (643), 301 states have call successors, (301), 71 states have call predecessors, (301), 70 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-10-17 17:15:20,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:15:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:15:21,023 INFO L93 Difference]: Finished difference Result 2474 states and 3610 transitions. [2022-10-17 17:15:21,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:15:21,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2022-10-17 17:15:21,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:15:21,082 INFO L225 Difference]: With dead ends: 2474 [2022-10-17 17:15:21,082 INFO L226 Difference]: Without dead ends: 1635 [2022-10-17 17:15:21,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:15:21,098 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 1116 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:15:21,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 2458 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 248 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-10-17 17:15:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2022-10-17 17:15:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1624. [2022-10-17 17:15:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 933 states have (on average 1.3054662379421222) internal successors, (1218), 973 states have internal predecessors, (1218), 553 states have call successors, (553), 138 states have call predecessors, (553), 137 states have return successors, (540), 536 states have call predecessors, (540), 539 states have call successors, (540) [2022-10-17 17:15:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2311 transitions. [2022-10-17 17:15:21,342 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2311 transitions. Word has length 140 [2022-10-17 17:15:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:15:21,344 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2311 transitions. [2022-10-17 17:15:21,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-10-17 17:15:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2311 transitions. [2022-10-17 17:15:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-10-17 17:15:21,350 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:15:21,351 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:15:21,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:15:21,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:15:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:15:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1253572996, now seen corresponding path program 1 times [2022-10-17 17:15:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:15:21,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256936861] [2022-10-17 17:15:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:15:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:15:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:15:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-10-17 17:15:21,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:15:21,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256936861] [2022-10-17 17:15:21,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256936861] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:15:21,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:15:21,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:15:21,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665790495] [2022-10-17 17:15:21,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:15:21,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:15:21,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:15:21,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:15:21,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:15:21,978 INFO L87 Difference]: Start difference. First operand 1624 states and 2311 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-17 17:15:24,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:15:27,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:15:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:15:27,135 INFO L93 Difference]: Finished difference Result 4038 states and 5682 transitions. [2022-10-17 17:15:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:15:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 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 145 [2022-10-17 17:15:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:15:27,162 INFO L225 Difference]: With dead ends: 4038 [2022-10-17 17:15:27,162 INFO L226 Difference]: Without dead ends: 2450 [2022-10-17 17:15:27,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:15:27,174 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 570 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:15:27,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 2284 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-10-17 17:15:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-10-17 17:15:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2419. [2022-10-17 17:15:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 1390 states have (on average 1.2992805755395684) internal successors, (1806), 1437 states have internal predecessors, (1806), 795 states have call successors, (795), 234 states have call predecessors, (795), 233 states have return successors, (784), 775 states have call predecessors, (784), 781 states have call successors, (784) [2022-10-17 17:15:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 3385 transitions. [2022-10-17 17:15:27,362 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 3385 transitions. Word has length 145 [2022-10-17 17:15:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:15:27,365 INFO L495 AbstractCegarLoop]: Abstraction has 2419 states and 3385 transitions. [2022-10-17 17:15:27,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-17 17:15:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 3385 transitions. [2022-10-17 17:15:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-10-17 17:15:27,373 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:15:27,374 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:15:27,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:15:27,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:15:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:15:27,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1856668743, now seen corresponding path program 1 times [2022-10-17 17:15:27,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:15:27,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947320992] [2022-10-17 17:15:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:15:27,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:15:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:15:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-10-17 17:15:27,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:15:27,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947320992] [2022-10-17 17:15:27,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947320992] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:15:27,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:15:27,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:15:27,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157198461] [2022-10-17 17:15:27,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:15:27,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:15:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:15:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:15:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:15:27,898 INFO L87 Difference]: Start difference. First operand 2419 states and 3385 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-17 17:15:29,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:15:32,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:15:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:15:32,802 INFO L93 Difference]: Finished difference Result 2465 states and 3434 transitions. [2022-10-17 17:15:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:15:32,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (20), 2 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 155 [2022-10-17 17:15:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:15:32,825 INFO L225 Difference]: With dead ends: 2465 [2022-10-17 17:15:32,825 INFO L226 Difference]: Without dead ends: 2462 [2022-10-17 17:15:32,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:15:32,829 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 1144 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:15:32,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 1157 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-10-17 17:15:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2022-10-17 17:15:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2462. [2022-10-17 17:15:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 1411 states have (on average 1.2941176470588236) internal successors, (1826), 1458 states have internal predecessors, (1826), 807 states have call successors, (807), 243 states have call predecessors, (807), 243 states have return successors, (798), 788 states have call predecessors, (798), 794 states have call successors, (798) [2022-10-17 17:15:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3431 transitions. [2022-10-17 17:15:33,013 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3431 transitions. Word has length 155 [2022-10-17 17:15:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:15:33,015 INFO L495 AbstractCegarLoop]: Abstraction has 2462 states and 3431 transitions. [2022-10-17 17:15:33,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-17 17:15:33,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3431 transitions. [2022-10-17 17:15:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-10-17 17:15:33,021 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:15:33,021 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:15:33,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:15:33,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:15:33,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:15:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1722648488, now seen corresponding path program 1 times [2022-10-17 17:15:33,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:15:33,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510730671] [2022-10-17 17:15:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:15:33,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:15:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:15:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-10-17 17:15:33,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:15:33,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510730671] [2022-10-17 17:15:33,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510730671] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:15:33,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:15:33,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:15:33,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881366342] [2022-10-17 17:15:33,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:15:33,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:15:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:15:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:15:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:15:33,433 INFO L87 Difference]: Start difference. First operand 2462 states and 3431 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-17 17:15:35,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []