./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:34:28,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:34:28,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:34:28,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:34:28,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:34:28,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:34:28,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:34:28,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:34:28,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:34:28,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:34:28,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:34:28,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:34:28,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:34:28,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:34:28,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:34:28,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:34:28,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:34:28,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:34:28,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:34:28,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:34:28,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:34:28,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:34:28,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:34:28,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:34:28,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:34:28,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:34:28,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:34:28,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:34:28,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:34:28,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:34:28,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:34:28,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:34:28,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:34:28,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:34:28,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:34:28,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:34:28,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:34:28,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:34:28,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:34:28,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:34:28,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:34:28,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:34:28,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:34:28,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:34:28,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:34:28,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:34:28,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:34:28,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:34:28,422 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:34:28,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:34:28,422 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:34:28,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:34:28,424 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:34:28,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:34:28,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:34:28,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:34:28,425 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:34:28,425 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:34:28,425 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:34:28,425 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:34:28,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:34:28,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:34:28,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:34:28,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:34:28,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:34:28,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:34:28,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:34:28,429 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:34:28,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:34:28,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:34:28,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:34:28,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:34:28,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:34:28,430 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:34:28,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:34:28,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:34:28,431 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:34:28,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:34:28,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:34:28,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:34:28,432 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_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2022-11-03 03:34:28,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:34:28,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:34:28,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:34:28,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:34:28,689 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:34:28,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-03 03:34:28,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/data/6990c9a0d/5e084362e23a49f3984c5610a3dff6f4/FLAG427b9926a [2022-11-03 03:34:29,759 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:34:29,760 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-03 03:34:29,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/data/6990c9a0d/5e084362e23a49f3984c5610a3dff6f4/FLAG427b9926a [2022-11-03 03:34:30,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/data/6990c9a0d/5e084362e23a49f3984c5610a3dff6f4 [2022-11-03 03:34:30,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:34:30,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:34:30,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:34:30,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:34:30,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:34:30,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:34:30" (1/1) ... [2022-11-03 03:34:30,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27973196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:30, skipping insertion in model container [2022-11-03 03:34:30,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:34:30" (1/1) ... [2022-11-03 03:34:30,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:34:30,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:34:31,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-11-03 03:34:32,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:34:32,920 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:34:33,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-11-03 03:34:33,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:34:33,592 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:34:33,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33 WrapperNode [2022-11-03 03:34:33,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:34:33,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:34:33,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:34:33,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:34:33,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:33,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:33,928 INFO L138 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6286 [2022-11-03 03:34:33,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:34:33,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:34:33,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:34:33,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:34:33,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:33,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:33,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:33,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:34,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:34,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:34,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:34,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:34,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:34:34,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:34:34,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:34:34,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:34:34,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (1/1) ... [2022-11-03 03:34:34,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:34:34,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:34,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:34:34,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184b7a4d-f198-4ae8-add5-560d6b8a9220/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:34:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-11-03 03:34:34,475 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-11-03 03:34:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-11-03 03:34:34,512 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-11-03 03:34:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-11-03 03:34:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-11-03 03:34:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-11-03 03:34:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-11-03 03:34:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:34:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:34:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2022-11-03 03:34:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2022-11-03 03:34:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-03 03:34:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-03 03:34:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:34:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:34:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-03 03:34:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-03 03:34:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-11-03 03:34:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-11-03 03:34:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-11-03 03:34:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-11-03 03:34:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2022-11-03 03:34:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2022-11-03 03:34:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 03:34:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 03:34:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-11-03 03:34:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-11-03 03:34:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:34:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:34:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 03:34:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 03:34:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-11-03 03:34:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-11-03 03:34:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:34:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:34:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-03 03:34:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-03 03:34:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 03:34:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 03:34:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-11-03 03:34:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-11-03 03:34:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2022-11-03 03:34:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2022-11-03 03:34:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-11-03 03:34:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-11-03 03:34:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-11-03 03:34:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-11-03 03:34:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:34:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:34:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:34:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:34:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-11-03 03:34:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-11-03 03:34:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-11-03 03:34:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-11-03 03:34:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-11-03 03:34:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-11-03 03:34:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-03 03:34:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-03 03:34:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-11-03 03:34:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-11-03 03:34:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:34:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:34:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:34:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:34:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-11-03 03:34:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-11-03 03:34:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-11-03 03:34:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-11-03 03:34:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-11-03 03:34:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-11-03 03:34:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-11-03 03:34:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-11-03 03:34:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2022-11-03 03:34:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2022-11-03 03:34:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2022-11-03 03:34:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2022-11-03 03:34:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-03 03:34:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-03 03:34:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 03:34:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 03:34:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:34:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:34:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:34:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:34:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:34:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-11-03 03:34:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-11-03 03:34:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-03 03:34:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-03 03:34:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-11-03 03:34:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-11-03 03:34:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-11-03 03:34:34,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-11-03 03:34:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 03:34:34,522 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 03:34:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:34:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:34:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:34:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 03:34:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-11-03 03:34:34,525 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-11-03 03:34:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-11-03 03:34:34,525 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-11-03 03:34:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-03 03:34:34,525 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-03 03:34:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:34:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:34:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-11-03 03:34:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-11-03 03:34:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-11-03 03:34:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-11-03 03:34:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:34:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:34:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-11-03 03:34:34,527 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-11-03 03:34:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:34:34,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:34:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-03 03:34:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-03 03:34:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:34:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:34:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-11-03 03:34:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-11-03 03:34:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-11-03 03:34:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-11-03 03:34:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:34:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:34:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:34:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:34:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:34:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:34:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-11-03 03:34:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-11-03 03:34:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-03 03:34:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-03 03:34:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-11-03 03:34:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-11-03 03:34:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 03:34:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 03:34:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-11-03 03:34:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-11-03 03:34:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2022-11-03 03:34:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2022-11-03 03:34:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:34:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:34:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-11-03 03:34:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-11-03 03:34:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:34:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:34:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-03 03:34:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-03 03:34:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-03 03:34:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-03 03:34:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-11-03 03:34:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-11-03 03:34:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-11-03 03:34:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-11-03 03:34:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-03 03:34:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-03 03:34:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:34:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-11-03 03:34:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-11-03 03:34:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 03:34:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 03:34:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2022-11-03 03:34:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2022-11-03 03:34:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:34:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:34:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-11-03 03:34:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-11-03 03:34:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-11-03 03:34:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-11-03 03:34:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:34:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:34:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:34:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:34:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-03 03:34:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-03 03:34:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-11-03 03:34:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-11-03 03:34:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:34:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:34:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2022-11-03 03:34:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2022-11-03 03:34:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2022-11-03 03:34:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2022-11-03 03:34:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-03 03:34:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-03 03:34:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:34:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2022-11-03 03:34:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2022-11-03 03:34:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-11-03 03:34:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-11-03 03:34:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-03 03:34:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-03 03:34:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:34:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:34:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-11-03 03:34:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-11-03 03:34:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-11-03 03:34:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-11-03 03:34:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2022-11-03 03:34:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2022-11-03 03:34:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:34:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-11-03 03:34:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-11-03 03:34:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:34:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:34:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:34:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:34:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:34:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2022-11-03 03:34:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2022-11-03 03:34:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2022-11-03 03:34:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2022-11-03 03:34:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:34:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:34:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:34:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:34:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-11-03 03:34:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-11-03 03:34:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:34:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:34:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-03 03:34:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-03 03:34:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2022-11-03 03:34:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2022-11-03 03:34:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-11-03 03:34:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-11-03 03:34:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-11-03 03:34:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-11-03 03:34:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-11-03 03:34:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-11-03 03:34:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-03 03:34:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-03 03:34:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 03:34:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 03:34:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-11-03 03:34:34,552 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-11-03 03:34:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:34:34,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:34:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-11-03 03:34:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-11-03 03:34:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:34:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:34:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 03:34:34,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 03:34:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:34:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:34:34,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:34:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-03 03:34:34,562 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-03 03:34:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-11-03 03:34:34,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-11-03 03:34:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:34:34,562 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:34:35,529 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:34:35,538 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:34:36,039 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:34:36,875 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2022-11-03 03:34:44,922 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:34:46,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:34:46,335 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:34:46,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:46 BoogieIcfgContainer [2022-11-03 03:34:46,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:34:46,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:34:46,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:34:46,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:34:46,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:34:30" (1/3) ... [2022-11-03 03:34:46,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b67cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:46, skipping insertion in model container [2022-11-03 03:34:46,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:34:33" (2/3) ... [2022-11-03 03:34:46,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b67cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:46, skipping insertion in model container [2022-11-03 03:34:46,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:46" (3/3) ... [2022-11-03 03:34:46,350 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-11-03 03:34:46,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:34:46,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:34:46,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:34:46,461 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;@1d028a5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:34:46,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:34:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 1613 states, 1026 states have (on average 1.361598440545809) internal successors, (1397), 1067 states have internal predecessors, (1397), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) [2022-11-03 03:34:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 03:34:46,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:46,491 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:46,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash 957623129, now seen corresponding path program 1 times [2022-11-03 03:34:46,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:46,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653650998] [2022-11-03 03:34:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:46,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 03:34:47,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653650998] [2022-11-03 03:34:47,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653650998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:47,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:47,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:47,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057660725] [2022-11-03 03:34:47,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:47,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:47,430 INFO L87 Difference]: Start difference. First operand has 1613 states, 1026 states have (on average 1.361598440545809) internal successors, (1397), 1067 states have internal predecessors, (1397), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 03:34:50,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:53,684 INFO L93 Difference]: Finished difference Result 4729 states and 6997 transitions. [2022-11-03 03:34:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:53,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2022-11-03 03:34:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:53,729 INFO L225 Difference]: With dead ends: 4729 [2022-11-03 03:34:53,729 INFO L226 Difference]: Without dead ends: 3101 [2022-11-03 03:34:53,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:53,749 INFO L413 NwaCegarLoop]: 2722 mSDtfsCounter, 2173 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 4732 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:53,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 4732 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 644 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-03 03:34:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-11-03 03:34:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 3098. [2022-11-03 03:34:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 1997 states have (on average 1.3485227841762644) internal successors, (2693), 2039 states have internal predecessors, (2693), 867 states have call successors, (867), 234 states have call predecessors, (867), 233 states have return successors, (860), 838 states have call predecessors, (860), 860 states have call successors, (860) [2022-11-03 03:34:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4420 transitions. [2022-11-03 03:34:54,042 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4420 transitions. Word has length 65 [2022-11-03 03:34:54,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:54,043 INFO L495 AbstractCegarLoop]: Abstraction has 3098 states and 4420 transitions. [2022-11-03 03:34:54,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 03:34:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4420 transitions. [2022-11-03 03:34:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 03:34:54,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:54,053 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:54,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:34:54,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash -227593121, now seen corresponding path program 1 times [2022-11-03 03:34:54,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:54,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244611876] [2022-11-03 03:34:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:54,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:54,638 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 03:34:54,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:54,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244611876] [2022-11-03 03:34:54,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244611876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:54,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:54,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:54,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748629927] [2022-11-03 03:34:54,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:54,649 INFO L87 Difference]: Start difference. First operand 3098 states and 4420 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:34:57,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:00,704 INFO L93 Difference]: Finished difference Result 9168 states and 13211 transitions. [2022-11-03 03:35:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:00,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-11-03 03:35:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:00,759 INFO L225 Difference]: With dead ends: 9168 [2022-11-03 03:35:00,759 INFO L226 Difference]: Without dead ends: 6088 [2022-11-03 03:35:00,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:00,784 INFO L413 NwaCegarLoop]: 2782 mSDtfsCounter, 2218 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 4758 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:00,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2218 Valid, 4758 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 669 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 03:35:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6088 states. [2022-11-03 03:35:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 6062. [2022-11-03 03:35:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6062 states, 3906 states have (on average 1.3461341525857655) internal successors, (5258), 3985 states have internal predecessors, (5258), 1691 states have call successors, (1691), 465 states have call predecessors, (1691), 464 states have return successors, (1838), 1639 states have call predecessors, (1838), 1684 states have call successors, (1838) [2022-11-03 03:35:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 8787 transitions. [2022-11-03 03:35:01,146 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 8787 transitions. Word has length 83 [2022-11-03 03:35:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:01,148 INFO L495 AbstractCegarLoop]: Abstraction has 6062 states and 8787 transitions. [2022-11-03 03:35:01,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:35:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 8787 transitions. [2022-11-03 03:35:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 03:35:01,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:01,153 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:01,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:35:01,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash -921499869, now seen corresponding path program 1 times [2022-11-03 03:35:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:01,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578222377] [2022-11-03 03:35:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:01,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 03:35:01,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578222377] [2022-11-03 03:35:01,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578222377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:01,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:01,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277527644] [2022-11-03 03:35:01,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:01,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:01,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:01,535 INFO L87 Difference]: Start difference. First operand 6062 states and 8787 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:35:04,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:07,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:08,220 INFO L93 Difference]: Finished difference Result 16860 states and 24326 transitions. [2022-11-03 03:35:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:08,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2022-11-03 03:35:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:08,303 INFO L225 Difference]: With dead ends: 16860 [2022-11-03 03:35:08,303 INFO L226 Difference]: Without dead ends: 10816 [2022-11-03 03:35:08,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:08,342 INFO L413 NwaCegarLoop]: 2637 mSDtfsCounter, 1782 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 4513 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:08,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1784 Valid, 4513 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 697 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 03:35:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10816 states. [2022-11-03 03:35:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10816 to 10754. [2022-11-03 03:35:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10754 states, 6906 states have (on average 1.3373877787431219) internal successors, (9236), 7059 states have internal predecessors, (9236), 2989 states have call successors, (2989), 859 states have call predecessors, (2989), 858 states have return successors, (3270), 2889 states have call predecessors, (3270), 2982 states have call successors, (3270) [2022-11-03 03:35:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 15495 transitions. [2022-11-03 03:35:08,929 INFO L78 Accepts]: Start accepts. Automaton has 10754 states and 15495 transitions. Word has length 81 [2022-11-03 03:35:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:08,930 INFO L495 AbstractCegarLoop]: Abstraction has 10754 states and 15495 transitions. [2022-11-03 03:35:08,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:35:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 10754 states and 15495 transitions. [2022-11-03 03:35:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 03:35:08,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:08,935 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:08,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:35:08,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash 552298856, now seen corresponding path program 1 times [2022-11-03 03:35:08,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:08,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119997077] [2022-11-03 03:35:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 03:35:09,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119997077] [2022-11-03 03:35:09,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119997077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:09,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:09,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:09,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95380018] [2022-11-03 03:35:09,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:09,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:09,853 INFO L87 Difference]: Start difference. First operand 10754 states and 15495 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:35:11,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:13,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:18,286 INFO L93 Difference]: Finished difference Result 21276 states and 30817 transitions. [2022-11-03 03:35:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:18,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2022-11-03 03:35:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:18,419 INFO L225 Difference]: With dead ends: 21276 [2022-11-03 03:35:18,420 INFO L226 Difference]: Without dead ends: 21273 [2022-11-03 03:35:18,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:18,430 INFO L413 NwaCegarLoop]: 3044 mSDtfsCounter, 2130 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 5023 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:18,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 5023 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 665 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 03:35:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21273 states. [2022-11-03 03:35:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21273 to 21241. [2022-11-03 03:35:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21241 states, 13651 states have (on average 1.3382169804409934) internal successors, (18268), 13966 states have internal predecessors, (18268), 5895 states have call successors, (5895), 1699 states have call predecessors, (5895), 1694 states have return successors, (6616), 5683 states have call predecessors, (6616), 5888 states have call successors, (6616) [2022-11-03 03:35:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21241 states to 21241 states and 30779 transitions. [2022-11-03 03:35:19,697 INFO L78 Accepts]: Start accepts. Automaton has 21241 states and 30779 transitions. Word has length 84 [2022-11-03 03:35:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:19,699 INFO L495 AbstractCegarLoop]: Abstraction has 21241 states and 30779 transitions. [2022-11-03 03:35:19,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:35:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 21241 states and 30779 transitions. [2022-11-03 03:35:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 03:35:19,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:19,702 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:19,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:35:19,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:19,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash 422158427, now seen corresponding path program 1 times [2022-11-03 03:35:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:19,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528571344] [2022-11-03 03:35:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 03:35:20,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:20,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528571344] [2022-11-03 03:35:20,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528571344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:20,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:20,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533341614] [2022-11-03 03:35:20,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:20,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:20,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:20,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:20,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:20,032 INFO L87 Difference]: Start difference. First operand 21241 states and 30779 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:35:22,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:26,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:27,790 INFO L93 Difference]: Finished difference Result 62415 states and 90344 transitions. [2022-11-03 03:35:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:27,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2022-11-03 03:35:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:28,082 INFO L225 Difference]: With dead ends: 62415 [2022-11-03 03:35:28,082 INFO L226 Difference]: Without dead ends: 41192 [2022-11-03 03:35:28,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:28,192 INFO L413 NwaCegarLoop]: 3008 mSDtfsCounter, 1984 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:28,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 4964 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 669 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 03:35:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41192 states. [2022-11-03 03:35:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41192 to 41093. [2022-11-03 03:35:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41093 states, 26387 states have (on average 1.3367188388221474) internal successors, (35272), 27006 states have internal predecessors, (35272), 11371 states have call successors, (11371), 3339 states have call predecessors, (11371), 3334 states have return successors, (12828), 10963 states have call predecessors, (12828), 11364 states have call successors, (12828) [2022-11-03 03:35:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41093 states to 41093 states and 59471 transitions. [2022-11-03 03:35:31,441 INFO L78 Accepts]: Start accepts. Automaton has 41093 states and 59471 transitions. Word has length 87 [2022-11-03 03:35:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:31,441 INFO L495 AbstractCegarLoop]: Abstraction has 41093 states and 59471 transitions. [2022-11-03 03:35:31,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:35:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 41093 states and 59471 transitions. [2022-11-03 03:35:31,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 03:35:31,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:31,444 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:31,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:35:31,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:31,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash -60058055, now seen corresponding path program 1 times [2022-11-03 03:35:31,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:31,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979467773] [2022-11-03 03:35:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 03:35:32,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:32,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979467773] [2022-11-03 03:35:32,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979467773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:32,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:32,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:32,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074253433] [2022-11-03 03:35:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:32,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:32,063 INFO L87 Difference]: Start difference. First operand 41093 states and 59471 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:35:35,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:37,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:43,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:43,024 INFO L93 Difference]: Finished difference Result 123118 states and 180111 transitions. [2022-11-03 03:35:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:43,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2022-11-03 03:35:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:43,660 INFO L225 Difference]: With dead ends: 123118 [2022-11-03 03:35:43,660 INFO L226 Difference]: Without dead ends: 82043 [2022-11-03 03:35:44,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:44,162 INFO L413 NwaCegarLoop]: 3092 mSDtfsCounter, 2193 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:44,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2193 Valid, 5068 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 03:35:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82043 states. [2022-11-03 03:35:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82043 to 81984. [2022-11-03 03:35:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81984 states, 52638 states have (on average 1.336790911508796) internal successors, (70366), 53901 states have internal predecessors, (70366), 22683 states have call successors, (22683), 6671 states have call predecessors, (22683), 6662 states have return successors, (26564), 21843 states have call predecessors, (26564), 22676 states have call successors, (26564) [2022-11-03 03:35:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81984 states to 81984 states and 119613 transitions. [2022-11-03 03:35:49,799 INFO L78 Accepts]: Start accepts. Automaton has 81984 states and 119613 transitions. Word has length 85 [2022-11-03 03:35:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:49,800 INFO L495 AbstractCegarLoop]: Abstraction has 81984 states and 119613 transitions. [2022-11-03 03:35:49,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:35:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 81984 states and 119613 transitions. [2022-11-03 03:35:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 03:35:49,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:49,803 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:35:49,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:49,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1863248245, now seen corresponding path program 1 times [2022-11-03 03:35:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:49,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086171604] [2022-11-03 03:35:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 03:35:50,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:50,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086171604] [2022-11-03 03:35:50,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086171604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:50,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:50,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507384139] [2022-11-03 03:35:50,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:50,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:50,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:50,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:50,095 INFO L87 Difference]: Start difference. First operand 81984 states and 119613 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:35:51,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:53,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:00,872 INFO L93 Difference]: Finished difference Result 122092 states and 182691 transitions. [2022-11-03 03:36:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2022-11-03 03:36:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:01,865 INFO L225 Difference]: With dead ends: 122092 [2022-11-03 03:36:01,865 INFO L226 Difference]: Without dead ends: 122089 [2022-11-03 03:36:01,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:01,922 INFO L413 NwaCegarLoop]: 3085 mSDtfsCounter, 2144 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 5151 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:01,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 5151 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 666 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-03 03:36:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122089 states. [2022-11-03 03:36:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122089 to 121924. [2022-11-03 03:36:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121924 states, 78298 states have (on average 1.3389486321489694) internal successors, (104837), 80437 states have internal predecessors, (104837), 33763 states have call successors, (33763), 10003 states have call predecessors, (33763), 9862 states have return successors, (43892), 32099 states have call predecessors, (43892), 33756 states have call successors, (43892) [2022-11-03 03:36:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121924 states to 121924 states and 182492 transitions. [2022-11-03 03:36:08,852 INFO L78 Accepts]: Start accepts. Automaton has 121924 states and 182492 transitions. Word has length 86 [2022-11-03 03:36:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:08,853 INFO L495 AbstractCegarLoop]: Abstraction has 121924 states and 182492 transitions. [2022-11-03 03:36:08,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:36:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 121924 states and 182492 transitions. [2022-11-03 03:36:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 03:36:08,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:08,856 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:08,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:36:08,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1927564420, now seen corresponding path program 1 times [2022-11-03 03:36:08,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:08,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732054473] [2022-11-03 03:36:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:08,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 03:36:09,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:09,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732054473] [2022-11-03 03:36:09,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732054473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:09,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:09,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:09,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996133198] [2022-11-03 03:36:09,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:09,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:09,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:09,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:09,117 INFO L87 Difference]: Start difference. First operand 121924 states and 182492 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:36:12,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:15,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:22,672 INFO L93 Difference]: Finished difference Result 235500 states and 353681 transitions. [2022-11-03 03:36:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:22,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2022-11-03 03:36:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:23,685 INFO L225 Difference]: With dead ends: 235500 [2022-11-03 03:36:23,685 INFO L226 Difference]: Without dead ends: 150038 [2022-11-03 03:36:24,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:24,486 INFO L413 NwaCegarLoop]: 2976 mSDtfsCounter, 1872 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 4978 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:24,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 4978 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 660 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 03:36:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150038 states.