./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-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI --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 2f349249e9e86997fa8ff3fec7fb7aa332cbfd0034f841eea19465e389dd90de --- 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-5e519f3 [2022-11-03 01:47:27,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:47:27,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:47:27,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:47:27,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:47:27,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:47:27,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:47:27,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:47:27,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:47:27,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:47:27,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:47:27,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:47:27,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:47:27,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:47:27,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:47:27,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:47:27,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:47:27,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:47:27,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:47:27,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:47:27,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:47:27,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:47:27,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:47:27,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:47:27,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:47:27,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:47:27,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:47:27,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:47:27,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:47:27,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:47:27,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:47:27,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:47:27,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:47:27,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:47:27,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:47:27,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:47:27,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:47:27,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:47:27,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:47:27,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:47:27,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:47:27,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:47:27,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:47:27,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:47:27,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:47:27,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:47:27,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:47:27,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:47:27,759 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:47:27,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:47:27,760 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:47:27,760 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:47:27,761 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:47:27,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:47:27,762 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:47:27,762 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:47:27,762 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:47:27,763 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:47:27,763 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:47:27,763 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:47:27,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:47:27,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:47:27,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:47:27,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:47:27,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:47:27,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:47:27,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:47:27,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:47:27,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:47:27,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:47:27,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:47:27,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:47:27,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:47:27,768 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:47:27,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:47:27,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:47:27,769 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:47:27,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:47:27,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:47:27,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:47:27,770 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_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f349249e9e86997fa8ff3fec7fb7aa332cbfd0034f841eea19465e389dd90de [2022-11-03 01:47:28,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:47:28,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:47:28,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:47:28,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:47:28,180 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:47:28,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2022-11-03 01:47:28,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/data/976601d95/82a8d7e1e4ff4420b43744fdd26f5666/FLAG014adfa6c [2022-11-03 01:47:29,405 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:47:29,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2022-11-03 01:47:29,463 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/data/976601d95/82a8d7e1e4ff4420b43744fdd26f5666/FLAG014adfa6c [2022-11-03 01:47:29,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/data/976601d95/82a8d7e1e4ff4420b43744fdd26f5666 [2022-11-03 01:47:29,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:47:29,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:47:29,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:47:29,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:47:29,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:47:29,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:47:29" (1/1) ... [2022-11-03 01:47:29,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dde7955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:29, skipping insertion in model container [2022-11-03 01:47:29,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:47:29" (1/1) ... [2022-11-03 01:47:29,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:47:29,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:47:32,471 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_890b918f-29df-416a-adcd-20961816699c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[281346,281359] [2022-11-03 01:47:32,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:47:32,574 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:47:33,290 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_890b918f-29df-416a-adcd-20961816699c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[281346,281359] [2022-11-03 01:47:33,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:47:33,401 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:47:33,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33 WrapperNode [2022-11-03 01:47:33,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:47:33,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:47:33,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:47:33,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:47:33,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:33,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:33,946 INFO L138 Inliner]: procedures = 272, calls = 2959, calls flagged for inlining = 111, calls inlined = 108, statements flattened = 6853 [2022-11-03 01:47:33,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:47:33,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:47:33,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:47:33,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:47:33,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:33,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:34,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:34,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:34,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:34,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:34,492 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:34,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:34,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:47:34,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:47:34,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:47:34,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:47:34,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (1/1) ... [2022-11-03 01:47:34,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:47:34,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:34,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:47:34,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:47:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_reset [2022-11-03 01:47:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_reset [2022-11-03 01:47:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2022-11-03 01:47:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2022-11-03 01:47:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2022-11-03 01:47:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2022-11-03 01:47:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 01:47:34,717 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 01:47:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 01:47:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 01:47:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:47:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:47:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:47:34,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:47:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure scan_periodic [2022-11-03 01:47:34,719 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_periodic [2022-11-03 01:47:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:47:34,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:47:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 01:47:34,720 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 01:47:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 01:47:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 01:47:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:47:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:47:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_create [2022-11-03 01:47:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_create [2022-11-03 01:47:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_readl [2022-11-03 01:47:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_readl [2022-11-03 01:47:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_run [2022-11-03 01:47:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_run [2022-11-03 01:47:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:47:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:47:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2022-11-03 01:47:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2022-11-03 01:47:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure qh_put [2022-11-03 01:47:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_put [2022-11-03 01:47:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_irq [2022-11-03 01:47:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_irq [2022-11-03 01:47:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:47:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:47:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure scan_async [2022-11-03 01:47:34,726 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_async [2022-11-03 01:47:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-03 01:47:34,726 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-03 01:47:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:47:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:47:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_halt [2022-11-03 01:47:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_halt [2022-11-03 01:47:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_endpoint_disable [2022-11-03 01:47:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_endpoint_disable [2022-11-03 01:47:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2022-11-03 01:47:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2022-11-03 01:47:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:47:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:47:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 01:47:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 01:47:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-03 01:47:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-03 01:47:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_qtd_free [2022-11-03 01:47:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_qtd_free [2022-11-03 01:47:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:47:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:47:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:47:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2022-11-03 01:47:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2022-11-03 01:47:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:47:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2022-11-03 01:47:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2022-11-03 01:47:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 01:47:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 01:47:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 01:47:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:47:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:47:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_writel [2022-11-03 01:47:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_writel [2022-11-03 01:47:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:47:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:47:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_shutdown [2022-11-03 01:47:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_shutdown [2022-11-03 01:47:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-03 01:47:34,740 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-03 01:47:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_murb_alloc [2022-11-03 01:47:34,741 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_murb_alloc [2022-11-03 01:47:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:47:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:47:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2022-11-03 01:47:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2022-11-03 01:47:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_urb_enqueue [2022-11-03 01:47:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_urb_enqueue [2022-11-03 01:47:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2022-11-03 01:47:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2022-11-03 01:47:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2022-11-03 01:47:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2022-11-03 01:47:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure intr_deschedule [2022-11-03 01:47:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_deschedule [2022-11-03 01:47:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_buf_alloc [2022-11-03 01:47:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_buf_alloc [2022-11-03 01:47:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 01:47:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 01:47:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_hub_control [2022-11-03 01:47:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_hub_control [2022-11-03 01:47:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2022-11-03 01:47:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2022-11-03 01:47:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2022-11-03 01:47:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 01:47:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 01:47:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2022-11-03 01:47:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2022-11-03 01:47:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 01:47:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 01:47:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:47:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_probe [2022-11-03 01:47:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_probe [2022-11-03 01:47:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:47:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:47:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure timer_action [2022-11-03 01:47:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_action [2022-11-03 01:47:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 01:47:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 01:47:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:47:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_get_frame [2022-11-03 01:47:34,767 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_get_frame [2022-11-03 01:47:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_stop [2022-11-03 01:47:34,767 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_stop [2022-11-03 01:47:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-03 01:47:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-03 01:47:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:47:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 01:47:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 01:47:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:47:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:47:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2022-11-03 01:47:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2022-11-03 01:47:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2022-11-03 01:47:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2022-11-03 01:47:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure __oxu_urb_enqueue [2022-11-03 01:47:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __oxu_urb_enqueue [2022-11-03 01:47:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_remove [2022-11-03 01:47:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_remove [2022-11-03 01:47:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-03 01:47:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-03 01:47:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:47:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:47:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 01:47:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 01:47:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:47:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 01:47:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 01:47:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 01:47:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 01:47:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:47:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:47:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_work [2022-11-03 01:47:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_work [2022-11-03 01:47:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure qh_unlink_periodic [2022-11-03 01:47:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_unlink_periodic [2022-11-03 01:47:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:47:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:47:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2022-11-03 01:47:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2022-11-03 01:47:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:47:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-03 01:47:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-03 01:47:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-03 01:47:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_async [2022-11-03 01:47:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_async [2022-11-03 01:47:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_mem_cleanup [2022-11-03 01:47:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_mem_cleanup [2022-11-03 01:47:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_to_hcd [2022-11-03 01:47:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_to_hcd [2022-11-03 01:47:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:47:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:47:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 01:47:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 01:47:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:47:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_qh_alloc [2022-11-03 01:47:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_qh_alloc [2022-11-03 01:47:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_bus_suspend [2022-11-03 01:47:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_bus_suspend [2022-11-03 01:47:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2022-11-03 01:47:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2022-11-03 01:47:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2022-11-03 01:47:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2022-11-03 01:47:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 01:47:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 01:47:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2022-11-03 01:47:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2022-11-03 01:47:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:47:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_hub_status_data [2022-11-03 01:47:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_hub_status_data [2022-11-03 01:47:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_shutdown [2022-11-03 01:47:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_shutdown [2022-11-03 01:47:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2022-11-03 01:47:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2022-11-03 01:47:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:47:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:47:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure qh_get [2022-11-03 01:47:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_get [2022-11-03 01:47:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 01:47:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 01:47:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_quiesce [2022-11-03 01:47:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_quiesce [2022-11-03 01:47:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure timer_action_done [2022-11-03 01:47:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_action_done [2022-11-03 01:47:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 01:47:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 01:47:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 01:47:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 01:47:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure device_may_wakeup [2022-11-03 01:47:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure device_may_wakeup [2022-11-03 01:47:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_remove_hcd [2022-11-03 01:47:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_remove_hcd [2022-11-03 01:47:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_murb_free [2022-11-03 01:47:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_murb_free [2022-11-03 01:47:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_urb_done [2022-11-03 01:47:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_urb_done [2022-11-03 01:47:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2022-11-03 01:47:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2022-11-03 01:47:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2022-11-03 01:47:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2022-11-03 01:47:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-03 01:47:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-03 01:47:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2022-11-03 01:47:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2022-11-03 01:47:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:47:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:47:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2022-11-03 01:47:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2022-11-03 01:47:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 01:47:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 01:47:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_bus_resume [2022-11-03 01:47:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_bus_resume [2022-11-03 01:47:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_urb_dequeue [2022-11-03 01:47:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_urb_dequeue [2022-11-03 01:47:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 01:47:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 01:47:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 01:47:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 01:47:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 01:47:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 01:47:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 01:47:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 01:47:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2022-11-03 01:47:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2022-11-03 01:47:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_remove [2022-11-03 01:47:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_remove [2022-11-03 01:47:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:47:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_qtd_alloc [2022-11-03 01:47:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_qtd_alloc [2022-11-03 01:47:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_oxu [2022-11-03 01:47:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_oxu [2022-11-03 01:47:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_reset [2022-11-03 01:47:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_reset [2022-11-03 01:47:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:47:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:47:34,801 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:47:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:47:36,016 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:47:36,024 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:47:36,819 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:47:47,478 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:47:51,180 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:47:51,180 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:47:51,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:51 BoogieIcfgContainer [2022-11-03 01:47:51,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:47:51,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:47:51,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:47:51,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:47:51,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:47:29" (1/3) ... [2022-11-03 01:47:51,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7bc530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:51, skipping insertion in model container [2022-11-03 01:47:51,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:33" (2/3) ... [2022-11-03 01:47:51,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7bc530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:51, skipping insertion in model container [2022-11-03 01:47:51,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:51" (3/3) ... [2022-11-03 01:47:51,201 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2022-11-03 01:47:51,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:47:51,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:47:51,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:47:51,392 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;@40386b6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:47:51,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:47:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 2210 states, 1378 states have (on average 1.3570391872278664) internal successors, (1870), 1449 states have internal predecessors, (1870), 712 states have call successors, (712), 119 states have call predecessors, (712), 118 states have return successors, (706), 690 states have call predecessors, (706), 706 states have call successors, (706) [2022-11-03 01:47:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-03 01:47:51,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:51,509 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:51,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2056640758, now seen corresponding path program 1 times [2022-11-03 01:47:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:51,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788672348] [2022-11-03 01:47:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-11-03 01:47:52,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:52,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788672348] [2022-11-03 01:47:52,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788672348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:52,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:52,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:47:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109062289] [2022-11-03 01:47:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:52,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:47:52,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:52,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:47:52,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:47:52,955 INFO L87 Difference]: Start difference. First operand has 2210 states, 1378 states have (on average 1.3570391872278664) internal successors, (1870), 1449 states have internal predecessors, (1870), 712 states have call successors, (712), 119 states have call predecessors, (712), 118 states have return successors, (706), 690 states have call predecessors, (706), 706 states have call successors, (706) Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 01:47:55,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:59,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:03,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:03,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:03,941 INFO L93 Difference]: Finished difference Result 6420 states and 9547 transitions. [2022-11-03 01:48:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:03,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 247 [2022-11-03 01:48:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:04,015 INFO L225 Difference]: With dead ends: 6420 [2022-11-03 01:48:04,015 INFO L226 Difference]: Without dead ends: 4212 [2022-11-03 01:48:04,041 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 [2022-11-03 01:48:04,044 INFO L413 NwaCegarLoop]: 3662 mSDtfsCounter, 3008 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3008 SdHoareTripleChecker+Valid, 6567 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:04,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3008 Valid, 6567 Invalid, 661 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 657 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2022-11-03 01:48:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2022-11-03 01:48:04,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 4209. [2022-11-03 01:48:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 2625 states have (on average 1.3443809523809525) internal successors, (3529), 2751 states have internal predecessors, (3529), 1350 states have call successors, (1350), 234 states have call predecessors, (1350), 233 states have return successors, (1349), 1317 states have call predecessors, (1349), 1349 states have call successors, (1349) [2022-11-03 01:48:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 6228 transitions. [2022-11-03 01:48:04,540 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 6228 transitions. Word has length 247 [2022-11-03 01:48:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:04,542 INFO L495 AbstractCegarLoop]: Abstraction has 4209 states and 6228 transitions. [2022-11-03 01:48:04,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 01:48:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 6228 transitions. [2022-11-03 01:48:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-03 01:48:04,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:04,564 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:48:04,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:04,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1818927410, now seen corresponding path program 1 times [2022-11-03 01:48:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:04,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513802057] [2022-11-03 01:48:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:04,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-11-03 01:48:05,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:05,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513802057] [2022-11-03 01:48:05,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513802057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:05,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:05,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:05,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260722877] [2022-11-03 01:48:05,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:05,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:05,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:05,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:05,386 INFO L87 Difference]: Start difference. First operand 4209 states and 6228 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 01:48:07,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:13,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:14,263 INFO L93 Difference]: Finished difference Result 11543 states and 17019 transitions. [2022-11-03 01:48:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 242 [2022-11-03 01:48:14,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:14,344 INFO L225 Difference]: With dead ends: 11543 [2022-11-03 01:48:14,344 INFO L226 Difference]: Without dead ends: 7375 [2022-11-03 01:48:14,378 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 [2022-11-03 01:48:14,380 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 2971 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 7537 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:14,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 7537 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 766 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 01:48:14,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2022-11-03 01:48:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 7370. [2022-11-03 01:48:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7370 states, 4592 states have (on average 1.3414634146341464) internal successors, (6160), 4825 states have internal predecessors, (6160), 2341 states have call successors, (2341), 437 states have call predecessors, (2341), 436 states have return successors, (2343), 2274 states have call predecessors, (2343), 2340 states have call successors, (2343) [2022-11-03 01:48:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 10844 transitions. [2022-11-03 01:48:14,870 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 10844 transitions. Word has length 242 [2022-11-03 01:48:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:14,873 INFO L495 AbstractCegarLoop]: Abstraction has 7370 states and 10844 transitions. [2022-11-03 01:48:14,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 01:48:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 10844 transitions. [2022-11-03 01:48:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-03 01:48:14,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:14,919 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:48:14,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:14,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1751540164, now seen corresponding path program 1 times [2022-11-03 01:48:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:14,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334468886] [2022-11-03 01:48:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2022-11-03 01:48:15,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:15,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334468886] [2022-11-03 01:48:15,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334468886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:15,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:15,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:15,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977827416] [2022-11-03 01:48:15,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:15,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:15,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:15,990 INFO L87 Difference]: Start difference. First operand 7370 states and 10844 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-03 01:48:18,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:22,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:22,727 INFO L93 Difference]: Finished difference Result 14770 states and 21763 transitions. [2022-11-03 01:48:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:22,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 312 [2022-11-03 01:48:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:22,785 INFO L225 Difference]: With dead ends: 14770 [2022-11-03 01:48:22,786 INFO L226 Difference]: Without dead ends: 7441 [2022-11-03 01:48:22,832 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 [2022-11-03 01:48:22,837 INFO L413 NwaCegarLoop]: 2997 mSDtfsCounter, 16 mSDsluCounter, 3245 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 5975 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:22,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 5975 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 551 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 01:48:22,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2022-11-03 01:48:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 7396. [2022-11-03 01:48:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7396 states, 4613 states have (on average 1.3407760676349447) internal successors, (6185), 4847 states have internal predecessors, (6185), 2345 states have call successors, (2345), 437 states have call predecessors, (2345), 437 states have return successors, (2353), 2278 states have call predecessors, (2353), 2344 states have call successors, (2353) [2022-11-03 01:48:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7396 states to 7396 states and 10883 transitions. [2022-11-03 01:48:23,293 INFO L78 Accepts]: Start accepts. Automaton has 7396 states and 10883 transitions. Word has length 312 [2022-11-03 01:48:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:23,294 INFO L495 AbstractCegarLoop]: Abstraction has 7396 states and 10883 transitions. [2022-11-03 01:48:23,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-03 01:48:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7396 states and 10883 transitions. [2022-11-03 01:48:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-03 01:48:23,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:23,332 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:23,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:48:23,332 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2049129499, now seen corresponding path program 1 times [2022-11-03 01:48:23,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:23,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244633851] [2022-11-03 01:48:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:23,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2022-11-03 01:48:23,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:23,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244633851] [2022-11-03 01:48:23,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244633851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:23,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:23,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:23,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182863727] [2022-11-03 01:48:23,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:23,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:23,933 INFO L87 Difference]: Start difference. First operand 7396 states and 10883 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 01:48:25,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:31,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:34,114 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 [] [2022-11-03 01:48:34,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:34,636 INFO L93 Difference]: Finished difference Result 18762 states and 27641 transitions. [2022-11-03 01:48:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:34,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 315 [2022-11-03 01:48:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:34,738 INFO L225 Difference]: With dead ends: 18762 [2022-11-03 01:48:34,739 INFO L226 Difference]: Without dead ends: 11407 [2022-11-03 01:48:34,793 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 [2022-11-03 01:48:34,795 INFO L413 NwaCegarLoop]: 4584 mSDtfsCounter, 3060 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 57 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3060 SdHoareTripleChecker+Valid, 7429 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:34,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3060 Valid, 7429 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 811 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 01:48:34,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11407 states. [2022-11-03 01:48:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11407 to 11386. [2022-11-03 01:48:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11386 states, 7128 states have (on average 1.3371212121212122) internal successors, (9531), 7489 states have internal predecessors, (9531), 3589 states have call successors, (3589), 668 states have call predecessors, (3589), 668 states have return successors, (3596), 3489 states have call predecessors, (3596), 3588 states have call successors, (3596) [2022-11-03 01:48:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 16716 transitions. [2022-11-03 01:48:35,633 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 16716 transitions. Word has length 315 [2022-11-03 01:48:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:35,634 INFO L495 AbstractCegarLoop]: Abstraction has 11386 states and 16716 transitions. [2022-11-03 01:48:35,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 01:48:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 16716 transitions. [2022-11-03 01:48:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-03 01:48:35,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:35,664 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:35,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:48:35,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2076537082, now seen corresponding path program 1 times [2022-11-03 01:48:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:35,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394306337] [2022-11-03 01:48:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:35,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-11-03 01:48:36,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:36,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394306337] [2022-11-03 01:48:36,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394306337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:36,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911633825] [2022-11-03 01:48:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:36,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:36,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:36,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:36,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b918f-29df-416a-adcd-20961816699c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:48:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:38,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 4485 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:48:38,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-11-03 01:48:39,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-11-03 01:48:39,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911633825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:48:39,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1560640145] [2022-11-03 01:48:39,488 INFO L159 IcfgInterpreter]: Started Sifa with 126 locations of interest [2022-11-03 01:48:39,488 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:39,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:39,502 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:39,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:47,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:47,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:53,424 INFO L244 Elim1Store]: Index analysis took 7534 ms