./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba --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 ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- 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-b5237d8 [2022-11-22 01:20:06,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:20:06,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:20:06,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:20:06,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:20:06,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:20:06,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:20:06,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:20:06,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:20:06,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:20:06,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:20:06,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:20:06,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:20:06,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:20:06,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:20:06,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:20:06,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:20:06,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:20:06,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:20:06,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:20:06,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:20:06,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:20:06,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:20:06,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:20:06,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:20:06,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:20:06,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:20:06,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:20:06,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:20:06,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:20:06,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:20:06,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:20:06,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:20:06,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:20:06,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:20:06,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:20:06,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:20:06,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:20:06,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:20:06,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:20:06,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:20:06,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:20:06,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:20:06,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:20:06,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:20:06,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:20:06,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:20:06,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:20:06,692 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:20:06,692 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:20:06,692 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:20:06,693 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:20:06,694 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:20:06,694 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:20:06,695 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:20:06,695 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:20:06,695 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:20:06,696 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:20:06,696 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:20:06,696 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:20:06,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:20:06,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:20:06,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:20:06,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:20:06,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:20:06,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:20:06,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:20:06,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:20:06,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:20:06,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:20:06,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:20:06,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:06,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:20:06,702 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:20:06,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:20:06,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:20:06,703 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:20:06,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:20:06,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:20:06,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:20:06,704 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_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2022-11-22 01:20:07,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:20:07,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:20:07,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:20:07,067 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:20:07,068 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:20:07,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-22 01:20:10,444 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:20:11,210 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:20:11,211 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-22 01:20:11,266 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/data/691043213/7acb86dc29c149f097aed3bc09ff4952/FLAGc18ee9771 [2022-11-22 01:20:11,289 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/data/691043213/7acb86dc29c149f097aed3bc09ff4952 [2022-11-22 01:20:11,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:20:11,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:20:11,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:20:11,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:20:11,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:20:11,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:11" (1/1) ... [2022-11-22 01:20:11,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d317562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:11, skipping insertion in model container [2022-11-22 01:20:11,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:11" (1/1) ... [2022-11-22 01:20:11,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:20:11,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:20:13,885 WARN L237 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_551293aa-ca5a-4c33-8350-c7aeb270e05b/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-11-22 01:20:14,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:20:14,094 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:20:14,705 WARN L237 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_551293aa-ca5a-4c33-8350-c7aeb270e05b/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-11-22 01:20:14,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:20:14,903 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:20:14,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14 WrapperNode [2022-11-22 01:20:14,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:20:14,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:20:14,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:20:14,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:20:14,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,300 INFO L138 Inliner]: procedures = 373, calls = 2979, calls flagged for inlining = 172, calls inlined = 164, statements flattened = 5902 [2022-11-22 01:20:15,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:20:15,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:20:15,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:20:15,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:20:15,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:20:15,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:20:15,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:20:15,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:20:15,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (1/1) ... [2022-11-22 01:20:15,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:15,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:20:15,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:20:15,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:20:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-22 01:20:15,773 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-22 01:20:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-22 01:20:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-22 01:20:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-22 01:20:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-22 01:20:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-22 01:20:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-22 01:20:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-22 01:20:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-22 01:20:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-22 01:20:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-22 01:20:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-22 01:20:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-22 01:20:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-22 01:20:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-22 01:20:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-22 01:20:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-22 01:20:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-22 01:20:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-22 01:20:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-22 01:20:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-22 01:20:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-22 01:20:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-22 01:20:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-22 01:20:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-22 01:20:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-22 01:20:15,779 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-22 01:20:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:20:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:20:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-22 01:20:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-22 01:20:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-22 01:20:15,781 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-22 01:20:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-22 01:20:15,781 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-22 01:20:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-22 01:20:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-22 01:20:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 01:20:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 01:20:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-22 01:20:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-22 01:20:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 01:20:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 01:20:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-22 01:20:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-22 01:20:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-22 01:20:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-22 01:20:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-22 01:20:15,784 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-22 01:20:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-22 01:20:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-22 01:20:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-22 01:20:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-22 01:20:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:20:15,786 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:20:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2022-11-22 01:20:15,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2022-11-22 01:20:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-22 01:20:15,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-22 01:20:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-22 01:20:15,787 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-22 01:20:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-22 01:20:15,787 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-22 01:20:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-22 01:20:15,788 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-22 01:20:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-22 01:20:15,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-11-22 01:20:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-22 01:20:15,788 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-22 01:20:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-22 01:20:15,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-22 01:20:15,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-22 01:20:15,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-22 01:20:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 01:20:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 01:20:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:20:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 01:20:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 01:20:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-22 01:20:15,793 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-22 01:20:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-22 01:20:15,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-22 01:20:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-22 01:20:15,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-22 01:20:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-22 01:20:15,794 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-22 01:20:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-22 01:20:15,794 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-22 01:20:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-11-22 01:20:15,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-11-22 01:20:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:20:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 01:20:15,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 01:20:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-22 01:20:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-22 01:20:15,796 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-22 01:20:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-22 01:20:15,796 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-22 01:20:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 01:20:15,797 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 01:20:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-22 01:20:15,797 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-22 01:20:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:20:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:20:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-22 01:20:15,798 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-22 01:20:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 01:20:15,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 01:20:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-22 01:20:15,800 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-22 01:20:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-11-22 01:20:15,803 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-11-22 01:20:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-22 01:20:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-22 01:20:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 01:20:15,806 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 01:20:15,807 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-22 01:20:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-22 01:20:15,807 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-22 01:20:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-22 01:20:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 01:20:15,811 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 01:20:15,812 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 01:20:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 01:20:15,812 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-22 01:20:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-22 01:20:15,812 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-22 01:20:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-22 01:20:15,812 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 01:20:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 01:20:15,813 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-22 01:20:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-22 01:20:15,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-22 01:20:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-22 01:20:15,813 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-22 01:20:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-22 01:20:15,813 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-22 01:20:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-22 01:20:15,813 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 01:20:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 01:20:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-22 01:20:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-22 01:20:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-22 01:20:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-22 01:20:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-22 01:20:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-22 01:20:15,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-22 01:20:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-22 01:20:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-22 01:20:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-22 01:20:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-22 01:20:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-22 01:20:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:20:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-22 01:20:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-22 01:20:15,815 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-22 01:20:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-22 01:20:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-22 01:20:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-22 01:20:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-22 01:20:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-22 01:20:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-22 01:20:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-22 01:20:15,816 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:20:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:20:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-22 01:20:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-22 01:20:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-22 01:20:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-22 01:20:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-22 01:20:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-22 01:20:15,817 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:20:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:20:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-22 01:20:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-22 01:20:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:20:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-22 01:20:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-22 01:20:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-22 01:20:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-22 01:20:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-22 01:20:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:20:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:20:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-22 01:20:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-22 01:20:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-22 01:20:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-22 01:20:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-22 01:20:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-11-22 01:20:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:20:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-22 01:20:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-22 01:20:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:20:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:20:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:20:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:20:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:20:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:20:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:20:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-22 01:20:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-22 01:20:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2022-11-22 01:20:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2022-11-22 01:20:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 01:20:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 01:20:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-22 01:20:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-22 01:20:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2022-11-22 01:20:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2022-11-22 01:20:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-22 01:20:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-22 01:20:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-22 01:20:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-22 01:20:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-22 01:20:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-22 01:20:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:20:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:20:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-22 01:20:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-22 01:20:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 01:20:15,825 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 01:20:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-22 01:20:15,825 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-22 01:20:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 01:20:15,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 01:20:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-22 01:20:15,825 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-22 01:20:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:20:15,825 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:20:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:20:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:20:15,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:20:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:20:15,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:20:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-22 01:20:15,826 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-22 01:20:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-22 01:20:15,832 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-22 01:20:17,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:20:17,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:20:29,243 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:20:30,648 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:20:30,649 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:20:30,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:30 BoogieIcfgContainer [2022-11-22 01:20:30,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:20:30,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:20:30,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:20:30,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:20:30,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:20:11" (1/3) ... [2022-11-22 01:20:30,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c7234e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:30, skipping insertion in model container [2022-11-22 01:20:30,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:14" (2/3) ... [2022-11-22 01:20:30,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c7234e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:30, skipping insertion in model container [2022-11-22 01:20:30,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:30" (3/3) ... [2022-11-22 01:20:30,666 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-11-22 01:20:30,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:20:30,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:20:30,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:20:30,833 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;@7046c9b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:20:30,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:20:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 1417 states, 851 states have (on average 1.3243243243243243) internal successors, (1127), 885 states have internal predecessors, (1127), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) [2022-11-22 01:20:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:20:30,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:30,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:20:30,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1151269839, now seen corresponding path program 1 times [2022-11-22 01:20:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:30,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820642731] [2022-11-22 01:20:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:30,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:31,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:31,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820642731] [2022-11-22 01:20:31,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820642731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:31,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:31,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:20:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285777830] [2022-11-22 01:20:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:31,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:31,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:31,857 INFO L87 Difference]: Start difference. First operand has 1417 states, 851 states have (on average 1.3243243243243243) internal successors, (1127), 885 states have internal predecessors, (1127), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:20:34,721 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 [] [2022-11-22 01:20:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:37,914 INFO L93 Difference]: Finished difference Result 4015 states and 6027 transitions. [2022-11-22 01:20:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2022-11-22 01:20:37,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:37,991 INFO L225 Difference]: With dead ends: 4015 [2022-11-22 01:20:37,991 INFO L226 Difference]: Without dead ends: 2622 [2022-11-22 01:20:38,013 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 [2022-11-22 01:20:38,021 INFO L413 NwaCegarLoop]: 2355 mSDtfsCounter, 1876 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:38,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 4031 Invalid, 546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 540 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-22 01:20:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2022-11-22 01:20:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2617. [2022-11-22 01:20:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 1575 states have (on average 1.3212698412698414) internal successors, (2081), 1636 states have internal predecessors, (2081), 829 states have call successors, (829), 220 states have call predecessors, (829), 212 states have return successors, (892), 777 states have call predecessors, (892), 813 states have call successors, (892) [2022-11-22 01:20:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 3802 transitions. [2022-11-22 01:20:38,387 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 3802 transitions. Word has length 23 [2022-11-22 01:20:38,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:38,388 INFO L495 AbstractCegarLoop]: Abstraction has 2617 states and 3802 transitions. [2022-11-22 01:20:38,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:20:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 3802 transitions. [2022-11-22 01:20:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 01:20:38,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:38,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:20:38,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:20:38,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1331508350, now seen corresponding path program 1 times [2022-11-22 01:20:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:38,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522268043] [2022-11-22 01:20:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:38,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:38,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522268043] [2022-11-22 01:20:38,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522268043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:38,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:38,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:20:38,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415347618] [2022-11-22 01:20:38,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:38,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:38,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:38,775 INFO L87 Difference]: Start difference. First operand 2617 states and 3802 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:20:41,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:20:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:45,323 INFO L93 Difference]: Finished difference Result 5122 states and 7432 transitions. [2022-11-22 01:20:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:45,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2022-11-22 01:20:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:45,378 INFO L225 Difference]: With dead ends: 5122 [2022-11-22 01:20:45,378 INFO L226 Difference]: Without dead ends: 5119 [2022-11-22 01:20:45,387 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 [2022-11-22 01:20:45,388 INFO L413 NwaCegarLoop]: 2235 mSDtfsCounter, 1865 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 3982 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:45,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 3982 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 528 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-22 01:20:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2022-11-22 01:20:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5096. [2022-11-22 01:20:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 3062 states have (on average 1.3210320052253428) internal successors, (4045), 3175 states have internal predecessors, (4045), 1611 states have call successors, (1611), 436 states have call predecessors, (1611), 422 states have return successors, (1751), 1516 states have call predecessors, (1751), 1593 states have call successors, (1751) [2022-11-22 01:20:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 7407 transitions. [2022-11-22 01:20:45,887 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 7407 transitions. Word has length 24 [2022-11-22 01:20:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:45,888 INFO L495 AbstractCegarLoop]: Abstraction has 5096 states and 7407 transitions. [2022-11-22 01:20:45,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:20:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 7407 transitions. [2022-11-22 01:20:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 01:20:45,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:45,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:20:45,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:20:45,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:45,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1671037268, now seen corresponding path program 1 times [2022-11-22 01:20:45,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:45,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255510028] [2022-11-22 01:20:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:45,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:46,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:46,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255510028] [2022-11-22 01:20:46,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255510028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:46,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:46,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:20:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552922069] [2022-11-22 01:20:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:46,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:46,291 INFO L87 Difference]: Start difference. First operand 5096 states and 7407 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:20:49,643 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 [] [2022-11-22 01:20:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:52,428 INFO L93 Difference]: Finished difference Result 5123 states and 7433 transitions. [2022-11-22 01:20:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2022-11-22 01:20:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:52,470 INFO L225 Difference]: With dead ends: 5123 [2022-11-22 01:20:52,470 INFO L226 Difference]: Without dead ends: 5120 [2022-11-22 01:20:52,476 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 [2022-11-22 01:20:52,477 INFO L413 NwaCegarLoop]: 2247 mSDtfsCounter, 1862 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 3997 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:52,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 3997 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-22 01:20:52,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2022-11-22 01:20:52,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 5097. [2022-11-22 01:20:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 3063 states have (on average 1.3209271955599087) internal successors, (4046), 3176 states have internal predecessors, (4046), 1611 states have call successors, (1611), 436 states have call predecessors, (1611), 422 states have return successors, (1751), 1516 states have call predecessors, (1751), 1593 states have call successors, (1751) [2022-11-22 01:20:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 7408 transitions. [2022-11-22 01:20:52,898 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 7408 transitions. Word has length 25 [2022-11-22 01:20:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:52,899 INFO L495 AbstractCegarLoop]: Abstraction has 5097 states and 7408 transitions. [2022-11-22 01:20:52,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:20:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 7408 transitions. [2022-11-22 01:20:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 01:20:52,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:52,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:20:52,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:20:52,901 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 260675781, now seen corresponding path program 1 times [2022-11-22 01:20:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20208903] [2022-11-22 01:20:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:52,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:20:53,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:53,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20208903] [2022-11-22 01:20:53,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20208903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:53,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:53,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:20:53,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343402240] [2022-11-22 01:20:53,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:53,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:53,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:53,257 INFO L87 Difference]: Start difference. First operand 5097 states and 7408 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:20:56,334 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 [] [2022-11-22 01:20:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:59,317 INFO L93 Difference]: Finished difference Result 7005 states and 10197 transitions. [2022-11-22 01:20:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2022-11-22 01:20:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:59,382 INFO L225 Difference]: With dead ends: 7005 [2022-11-22 01:20:59,382 INFO L226 Difference]: Without dead ends: 6981 [2022-11-22 01:20:59,390 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 [2022-11-22 01:20:59,392 INFO L413 NwaCegarLoop]: 2268 mSDtfsCounter, 1870 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:59,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 3635 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 01:20:59,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2022-11-22 01:20:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6963. [2022-11-22 01:20:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6963 states, 4177 states have (on average 1.3184103423509697) internal successors, (5507), 4350 states have internal predecessors, (5507), 2183 states have call successors, (2183), 632 states have call predecessors, (2183), 602 states have return successors, (2456), 2025 states have call predecessors, (2456), 2164 states have call successors, (2456) [2022-11-22 01:20:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6963 states to 6963 states and 10146 transitions. [2022-11-22 01:20:59,959 INFO L78 Accepts]: Start accepts. Automaton has 6963 states and 10146 transitions. Word has length 26 [2022-11-22 01:20:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:59,960 INFO L495 AbstractCegarLoop]: Abstraction has 6963 states and 10146 transitions. [2022-11-22 01:20:59,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:20:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand 6963 states and 10146 transitions. [2022-11-22 01:20:59,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 01:20:59,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:59,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:20:59,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:20:59,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1504090209, now seen corresponding path program 1 times [2022-11-22 01:20:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:59,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815867839] [2022-11-22 01:20:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:00,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:00,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815867839] [2022-11-22 01:21:00,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815867839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:00,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:00,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132951803] [2022-11-22 01:21:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:00,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:00,516 INFO L87 Difference]: Start difference. First operand 6963 states and 10146 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:01,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:03,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:06,550 INFO L93 Difference]: Finished difference Result 13915 states and 20277 transitions. [2022-11-22 01:21:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:06,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2022-11-22 01:21:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:06,604 INFO L225 Difference]: With dead ends: 13915 [2022-11-22 01:21:06,604 INFO L226 Difference]: Without dead ends: 6964 [2022-11-22 01:21:06,645 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 [2022-11-22 01:21:06,646 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 0 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:06,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3528 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-22 01:21:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-11-22 01:21:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6964. [2022-11-22 01:21:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 4178 states have (on average 1.318334131163236) internal successors, (5508), 4351 states have internal predecessors, (5508), 2183 states have call successors, (2183), 632 states have call predecessors, (2183), 602 states have return successors, (2456), 2025 states have call predecessors, (2456), 2164 states have call successors, (2456) [2022-11-22 01:21:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 10147 transitions. [2022-11-22 01:21:07,113 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 10147 transitions. Word has length 34 [2022-11-22 01:21:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:07,114 INFO L495 AbstractCegarLoop]: Abstraction has 6964 states and 10147 transitions. [2022-11-22 01:21:07,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 10147 transitions. [2022-11-22 01:21:07,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 01:21:07,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:07,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:07,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:21:07,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:07,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2125090044, now seen corresponding path program 1 times [2022-11-22 01:21:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001169166] [2022-11-22 01:21:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:07,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:07,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:07,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001169166] [2022-11-22 01:21:07,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001169166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:21:07,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144020627] [2022-11-22 01:21:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:07,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:21:07,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:21:07,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:21:07,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:21:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:09,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 3606 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:21:09,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:21:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:21:09,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:21:09,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144020627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:09,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:21:09,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 01:21:09,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204797628] [2022-11-22 01:21:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:09,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:09,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:09,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:09,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:09,442 INFO L87 Difference]: Start difference. First operand 6964 states and 10147 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:12,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:14,970 INFO L93 Difference]: Finished difference Result 11164 states and 16253 transitions. [2022-11-22 01:21:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:14,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-22 01:21:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:15,032 INFO L225 Difference]: With dead ends: 11164 [2022-11-22 01:21:15,032 INFO L226 Difference]: Without dead ends: 8580 [2022-11-22 01:21:15,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:15,058 INFO L413 NwaCegarLoop]: 2366 mSDtfsCounter, 1989 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:15,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 3920 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-22 01:21:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8580 states. [2022-11-22 01:21:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8580 to 8537. [2022-11-22 01:21:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8537 states, 5130 states have (on average 1.3171539961013645) internal successors, (6757), 5334 states have internal predecessors, (6757), 2654 states have call successors, (2654), 788 states have call predecessors, (2654), 752 states have return successors, (3038), 2466 states have call predecessors, (3038), 2636 states have call successors, (3038) [2022-11-22 01:21:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8537 states to 8537 states and 12449 transitions. [2022-11-22 01:21:15,703 INFO L78 Accepts]: Start accepts. Automaton has 8537 states and 12449 transitions. Word has length 35 [2022-11-22 01:21:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:15,704 INFO L495 AbstractCegarLoop]: Abstraction has 8537 states and 12449 transitions. [2022-11-22 01:21:15,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 8537 states and 12449 transitions. [2022-11-22 01:21:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 01:21:15,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:15,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:15,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:21:15,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:21:15,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:15,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:15,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1455163633, now seen corresponding path program 1 times [2022-11-22 01:21:15,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:15,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625790747] [2022-11-22 01:21:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:15,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:16,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:16,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625790747] [2022-11-22 01:21:16,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625790747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:21:16,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631029263] [2022-11-22 01:21:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:16,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:21:16,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:21:16,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:21:16,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:21:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:18,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 3608 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:21:18,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:21:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:21:18,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:21:18,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631029263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:18,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:21:18,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 01:21:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992077870] [2022-11-22 01:21:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:18,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:18,229 INFO L87 Difference]: Start difference. First operand 8537 states and 12449 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:21,253 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 [] [2022-11-22 01:21:22,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:22,822 INFO L93 Difference]: Finished difference Result 8539 states and 12450 transitions. [2022-11-22 01:21:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:22,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2022-11-22 01:21:22,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:22,874 INFO L225 Difference]: With dead ends: 8539 [2022-11-22 01:21:22,874 INFO L226 Difference]: Without dead ends: 8536 [2022-11-22 01:21:22,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:22,881 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 1983 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:22,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 1763 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 01:21:22,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8536 states. [2022-11-22 01:21:23,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8536 to 8536. [2022-11-22 01:21:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8536 states, 5130 states have (on average 1.3167641325536061) internal successors, (6755), 5333 states have internal predecessors, (6755), 2653 states have call successors, (2653), 788 states have call predecessors, (2653), 752 states have return successors, (3038), 2466 states have call predecessors, (3038), 2636 states have call successors, (3038) [2022-11-22 01:21:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8536 states to 8536 states and 12446 transitions. [2022-11-22 01:21:23,448 INFO L78 Accepts]: Start accepts. Automaton has 8536 states and 12446 transitions. Word has length 36 [2022-11-22 01:21:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:23,448 INFO L495 AbstractCegarLoop]: Abstraction has 8536 states and 12446 transitions. [2022-11-22 01:21:23,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8536 states and 12446 transitions. [2022-11-22 01:21:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-22 01:21:23,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:23,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:23,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:21:23,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:21:23,672 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2132690791, now seen corresponding path program 1 times [2022-11-22 01:21:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:23,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600274518] [2022-11-22 01:21:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:23,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:24,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:24,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600274518] [2022-11-22 01:21:24,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600274518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:21:24,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910881493] [2022-11-22 01:21:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:24,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:21:24,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:21:24,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:21:24,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:21:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:25,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 3610 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:21:25,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:21:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:21:25,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:21:25,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910881493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:25,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:21:25,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 01:21:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815612636] [2022-11-22 01:21:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:25,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:25,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:25,934 INFO L87 Difference]: Start difference. First operand 8536 states and 12446 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:27,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:29,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:30,889 INFO L93 Difference]: Finished difference Result 8538 states and 12447 transitions. [2022-11-22 01:21:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:30,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2022-11-22 01:21:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:30,948 INFO L225 Difference]: With dead ends: 8538 [2022-11-22 01:21:30,949 INFO L226 Difference]: Without dead ends: 8506 [2022-11-22 01:21:30,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:30,958 INFO L413 NwaCegarLoop]: 1760 mSDtfsCounter, 1980 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:30,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1980 Valid, 1761 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-22 01:21:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2022-11-22 01:21:31,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 8493. [2022-11-22 01:21:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8493 states, 5112 states have (on average 1.3169014084507042) internal successors, (6732), 5314 states have internal predecessors, (6732), 2635 states have call successors, (2635), 779 states have call predecessors, (2635), 745 states have return successors, (3023), 2451 states have call predecessors, (3023), 2621 states have call successors, (3023) [2022-11-22 01:21:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8493 states to 8493 states and 12390 transitions. [2022-11-22 01:21:31,754 INFO L78 Accepts]: Start accepts. Automaton has 8493 states and 12390 transitions. Word has length 37 [2022-11-22 01:21:31,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:31,755 INFO L495 AbstractCegarLoop]: Abstraction has 8493 states and 12390 transitions. [2022-11-22 01:21:31,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 8493 states and 12390 transitions. [2022-11-22 01:21:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-22 01:21:31,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:31,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:31,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:21:31,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 01:21:31,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1687033106, now seen corresponding path program 1 times [2022-11-22 01:21:31,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:31,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295313232] [2022-11-22 01:21:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:31,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:32,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:32,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295313232] [2022-11-22 01:21:32,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295313232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:21:32,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135831266] [2022-11-22 01:21:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:32,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:21:32,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:21:32,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:21:32,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:21:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:34,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 3612 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:21:34,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:21:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:21:34,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:21:34,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135831266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:34,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:21:34,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 01:21:34,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125403028] [2022-11-22 01:21:34,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:34,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:34,270 INFO L87 Difference]: Start difference. First operand 8493 states and 12390 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:37,693 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 [] [2022-11-22 01:21:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:39,318 INFO L93 Difference]: Finished difference Result 8531 states and 12415 transitions. [2022-11-22 01:21:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:39,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-11-22 01:21:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:39,361 INFO L225 Difference]: With dead ends: 8531 [2022-11-22 01:21:39,362 INFO L226 Difference]: Without dead ends: 8497 [2022-11-22 01:21:39,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:39,367 INFO L413 NwaCegarLoop]: 1781 mSDtfsCounter, 1836 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:39,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 1936 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 01:21:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8497 states. [2022-11-22 01:21:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8497 to 8438. [2022-11-22 01:21:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 5093 states have (on average 1.317298252503436) internal successors, (6709), 5280 states have internal predecessors, (6709), 2590 states have call successors, (2590), 774 states have call predecessors, (2590), 754 states have return successors, (2959), 2435 states have call predecessors, (2959), 2579 states have call successors, (2959) [2022-11-22 01:21:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 12258 transitions. [2022-11-22 01:21:39,878 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 12258 transitions. Word has length 38 [2022-11-22 01:21:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:39,879 INFO L495 AbstractCegarLoop]: Abstraction has 8438 states and 12258 transitions. [2022-11-22 01:21:39,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:21:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 12258 transitions. [2022-11-22 01:21:39,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 01:21:39,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:39,883 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:21:39,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:21:40,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 01:21:40,097 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1743736050, now seen corresponding path program 1 times [2022-11-22 01:21:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:40,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386212428] [2022-11-22 01:21:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:40,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:21:40,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:40,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386212428] [2022-11-22 01:21:40,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386212428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:40,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:40,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:21:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902640394] [2022-11-22 01:21:40,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:40,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:21:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:40,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:21:40,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:21:40,446 INFO L87 Difference]: Start difference. First operand 8438 states and 12258 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 01:21:41,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:44,605 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 [] [2022-11-22 01:21:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:47,523 INFO L93 Difference]: Finished difference Result 11001 states and 15943 transitions. [2022-11-22 01:21:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:21:47,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2022-11-22 01:21:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:47,576 INFO L225 Difference]: With dead ends: 11001 [2022-11-22 01:21:47,576 INFO L226 Difference]: Without dead ends: 8438 [2022-11-22 01:21:47,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:47,597 INFO L413 NwaCegarLoop]: 1752 mSDtfsCounter, 1 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5251 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:47,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5251 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 763 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 01:21:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2022-11-22 01:21:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 8438. [2022-11-22 01:21:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 5093 states have (on average 1.3171019045749068) internal successors, (6708), 5280 states have internal predecessors, (6708), 2590 states have call successors, (2590), 774 states have call predecessors, (2590), 754 states have return successors, (2959), 2435 states have call predecessors, (2959), 2579 states have call successors, (2959) [2022-11-22 01:21:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 12257 transitions. [2022-11-22 01:21:48,124 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 12257 transitions. Word has length 46 [2022-11-22 01:21:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:48,125 INFO L495 AbstractCegarLoop]: Abstraction has 8438 states and 12257 transitions. [2022-11-22 01:21:48,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 01:21:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 12257 transitions. [2022-11-22 01:21:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 01:21:48,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:48,128 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:21:48,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:21:48,129 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash 916475284, now seen corresponding path program 1 times [2022-11-22 01:21:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:48,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136925937] [2022-11-22 01:21:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:48,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:21:48,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:48,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136925937] [2022-11-22 01:21:48,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136925937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:21:48,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096414015] [2022-11-22 01:21:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:48,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:21:48,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:21:48,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:21:48,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551293aa-ca5a-4c33-8350-c7aeb270e05b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:21:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:49,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:21:49,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:21:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:49,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:21:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:21:49,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096414015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:21:49,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [647045904] [2022-11-22 01:21:49,839 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-22 01:21:49,839 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:21:49,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:21:49,852 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:21:49,852 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:21:55,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-22 01:21:56,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 39 select indices, 39 select index equivalence classes, 780 disjoint index pairs (out of 741 index pairs), introduced 39 new quantified variables, introduced 0 case distinctions, treesize of input 1332 treesize of output 1158 [2022-11-22 01:21:58,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:59,629 INFO L217 Elim1Store]: Index analysis took 1565 ms [2022-11-22 01:23:24,449 WARN L233 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 3063 DAG size of output: 1983 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 01:23:24,460 INFO L321 Elim1Store]: treesize reduction 3520, result has 45.5 percent of original size [2022-11-22 01:23:24,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 341 select indices, 341 select index equivalence classes, 57972 disjoint index pairs (out of 57970 index pairs), introduced 341 new quantified variables, introduced 340 case distinctions, treesize of input 1712 treesize of output 3974 [2022-11-22 01:23:31,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-22 01:23:33,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:23:35,875 INFO L217 Elim1Store]: Index analysis took 2909 ms [2022-11-22 01:25:27,525 WARN L233 SmtUtils]: Spent 1.86m on a formula simplification. DAG size of input: 3745 DAG size of output: 2043 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 01:25:27,533 INFO L321 Elim1Store]: treesize reduction 6120, result has 33.3 percent of original size [2022-11-22 01:25:27,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 343 select indices, 343 select index equivalence classes, 58313 disjoint index pairs (out of 58653 index pairs), introduced 343 new quantified variables, introduced 680 case distinctions, treesize of input 1722 treesize of output 4105 [2022-11-22 01:29:08,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:29:08,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 01:29:22,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:22,519 INFO L217 Elim1Store]: Index analysis took 294 ms [2022-11-22 01:29:22,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 343 select indices, 343 select index equivalence classes, 58653 disjoint index pairs (out of 58653 index pairs), introduced 343 new quantified variables, introduced 0 case distinctions, treesize of input 1716 treesize of output 1030 [2022-11-22 01:29:26,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:29:26,672 INFO L217 Elim1Store]: Index analysis took 255 ms [2022-11-22 01:29:26,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 342 select indices, 342 select index equivalence classes, 58312 disjoint index pairs (out of 58311 index pairs), introduced 342 new quantified variables, introduced 0 case distinctions, treesize of input 1711 treesize of output 1027 [2022-11-22 01:30:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:30:04,668 INFO L217 Elim1Store]: Index analysis took 156 ms [2022-11-22 01:30:04,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 342 select indices, 342 select index equivalence classes, 58312 disjoint index pairs (out of 58311 index pairs), introduced 342 new quantified variables, introduced 0 case distinctions, treesize of input 1711 treesize of output 1027 [2022-11-22 01:30:07,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:30:07,397 INFO L217 Elim1Store]: Index analysis took 133 ms [2022-11-22 01:30:07,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 343 select indices, 343 select index equivalence classes, 58653 disjoint index pairs (out of 58653 index pairs), introduced 343 new quantified variables, introduced 0 case distinctions, treesize of input 1716 treesize of output 1030 [2022-11-22 01:30:17,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:30:17,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:30:17,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 01:30:18,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-22 01:30:18,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 01:30:18,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 01:31:17,779 INFO L197 IcfgInterpreter]: Interpreting procedure ldv__builtin_expect with input of size 183 for LOIs [2022-11-22 01:31:17,925 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_handler_precall with input of size 4191 for LOIs [2022-11-22 01:31:35,131 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_initialize with input of size 4198 for LOIs [2022-11-22 01:31:52,037 INFO L197 IcfgInterpreter]: Interpreting procedure put_tty_driver with input of size 98 for LOIs [2022-11-22 01:31:52,044 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 4197 for LOIs [2022-11-22 01:32:09,174 INFO L180 IcfgInterpreter]: Interpretation finished