./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/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_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/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_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/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 a3be286b709e69b0a57c5116077a4f1ba701b437b7bdc28c28b530a36c819e5e --- 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 02:36:37,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:36:37,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:36:37,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:36:37,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:36:37,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:36:37,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:36:37,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:36:37,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:36:37,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:36:37,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:36:37,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:36:37,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:36:37,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:36:37,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:36:37,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:36:37,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:36:37,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:36:37,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:36:37,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:36:37,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:36:37,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:36:37,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:36:37,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:36:37,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:36:37,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:36:37,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:36:37,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:36:37,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:36:37,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:36:37,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:36:37,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:36:37,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:36:37,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:36:37,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:36:37,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:36:37,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:36:37,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:36:37,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:36:37,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:36:37,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:36:37,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:36:37,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:36:37,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:36:37,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:36:37,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:36:37,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:36:37,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:36:37,427 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:36:37,427 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:36:37,427 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:36:37,427 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:36:37,429 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:36:37,429 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:36:37,429 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:36:37,430 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:36:37,430 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:36:37,430 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:36:37,430 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:36:37,430 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:36:37,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:36:37,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:36:37,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:36:37,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:36:37,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:36:37,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:36:37,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:36:37,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:36:37,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:36:37,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:36:37,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:36:37,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:36:37,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:36:37,434 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:36:37,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:36:37,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:36:37,435 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:36:37,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:36:37,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:36:37,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:36:37,436 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_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3be286b709e69b0a57c5116077a4f1ba701b437b7bdc28c28b530a36c819e5e [2022-11-03 02:36:37,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:36:37,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:36:37,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:36:37,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:36:37,721 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:36:37,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-11-03 02:36:37,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/data/738f8c630/e8f86a8edb23433383385b34bb8051cb/FLAG349ebb932 [2022-11-03 02:36:38,814 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:36:38,814 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-11-03 02:36:38,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/data/738f8c630/e8f86a8edb23433383385b34bb8051cb/FLAG349ebb932 [2022-11-03 02:36:39,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/data/738f8c630/e8f86a8edb23433383385b34bb8051cb [2022-11-03 02:36:39,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:36:39,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:36:39,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:36:39,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:36:39,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:36:39,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:36:39" (1/1) ... [2022-11-03 02:36:39,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217c652a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:39, skipping insertion in model container [2022-11-03 02:36:39,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:36:39" (1/1) ... [2022-11-03 02:36:39,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:36:39,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:36:41,914 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_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i[358518,358531] [2022-11-03 02:36:42,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:36:42,229 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:36:42,754 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_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i[358518,358531] [2022-11-03 02:36:42,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:36:42,940 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:36:42,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42 WrapperNode [2022-11-03 02:36:42,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:36:42,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:36:42,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:36:42,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:36:42,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,502 INFO L138 Inliner]: procedures = 319, calls = 4201, calls flagged for inlining = 120, calls inlined = 112, statements flattened = 9565 [2022-11-03 02:36:43,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:36:43,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:36:43,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:36:43,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:36:43,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:43,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:44,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:36:44,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:36:44,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:36:44,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:36:44,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (1/1) ... [2022-11-03 02:36:44,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:36:44,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:44,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:36:44,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:36:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:36:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:36:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2022-11-03 02:36:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2022-11-03 02:36:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 02:36:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 02:36:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:36:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:36:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-03 02:36:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:36:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:36:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:36:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:36:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:36:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:36:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2022-11-03 02:36:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2022-11-03 02:36:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 02:36:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 02:36:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-11-03 02:36:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-11-03 02:36:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:36:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:36:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-11-03 02:36:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-11-03 02:36:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2022-11-03 02:36:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2022-11-03 02:36:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:36:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:36:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2022-11-03 02:36:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2022-11-03 02:36:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2022-11-03 02:36:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2022-11-03 02:36:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-11-03 02:36:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2022-11-03 02:36:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-11-03 02:36:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2022-11-03 02:36:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:36:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:36:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:36:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:36:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-03 02:36:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-03 02:36:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2022-11-03 02:36:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2022-11-03 02:36:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-11-03 02:36:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-11-03 02:36:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2022-11-03 02:36:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2022-11-03 02:36:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:36:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:36:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:36:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:36:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2022-11-03 02:36:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2022-11-03 02:36:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2022-11-03 02:36:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2022-11-03 02:36:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:36:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:36:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2022-11-03 02:36:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2022-11-03 02:36:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2022-11-03 02:36:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2022-11-03 02:36:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2022-11-03 02:36:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2022-11-03 02:36:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2022-11-03 02:36:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2022-11-03 02:36:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:36:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2022-11-03 02:36:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2022-11-03 02:36:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:36:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2022-11-03 02:36:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2022-11-03 02:36:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-03 02:36:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-03 02:36:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-11-03 02:36:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-11-03 02:36:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:36:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_26 [2022-11-03 02:36:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_26 [2022-11-03 02:36:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2022-11-03 02:36:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2022-11-03 02:36:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2022-11-03 02:36:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2022-11-03 02:36:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:36:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:36:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-03 02:36:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-03 02:36:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2022-11-03 02:36:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2022-11-03 02:36:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-03 02:36:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-03 02:36:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-11-03 02:36:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-11-03 02:36:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:36:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2022-11-03 02:36:44,141 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2022-11-03 02:36:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:36:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:36:44,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:36:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:36:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:36:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:36:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:36:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2022-11-03 02:36:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2022-11-03 02:36:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:36:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:36:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2022-11-03 02:36:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2022-11-03 02:36:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2022-11-03 02:36:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2022-11-03 02:36:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:36:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2022-11-03 02:36:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2022-11-03 02:36:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:36:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:36:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-03 02:36:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-03 02:36:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:36:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:36:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2022-11-03 02:36:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2022-11-03 02:36:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2022-11-03 02:36:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2022-11-03 02:36:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:36:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:36:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2022-11-03 02:36:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2022-11-03 02:36:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2022-11-03 02:36:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2022-11-03 02:36:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-11-03 02:36:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-11-03 02:36:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2022-11-03 02:36:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2022-11-03 02:36:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:36:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:36:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2022-11-03 02:36:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2022-11-03 02:36:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 02:36:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 02:36:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:36:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:36:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:36:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2022-11-03 02:36:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2022-11-03 02:36:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2022-11-03 02:36:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2022-11-03 02:36:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2022-11-03 02:36:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2022-11-03 02:36:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:36:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:36:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:36:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:36:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-11-03 02:36:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-11-03 02:36:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:36:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-03 02:36:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-03 02:36:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:36:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:36:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-11-03 02:36:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-11-03 02:36:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 02:36:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 02:36:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:36:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2022-11-03 02:36:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2022-11-03 02:36:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:36:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:36:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write [2022-11-03 02:36:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write [2022-11-03 02:36:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2022-11-03 02:36:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2022-11-03 02:36:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-03 02:36:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-03 02:36:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:36:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:36:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2022-11-03 02:36:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2022-11-03 02:36:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure os_scsi_tape_flush [2022-11-03 02:36:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure os_scsi_tape_flush [2022-11-03 02:36:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2022-11-03 02:36:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2022-11-03 02:36:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2022-11-03 02:36:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2022-11-03 02:36:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:36:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:36:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-03 02:36:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-03 02:36:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-11-03 02:36:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-11-03 02:36:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2022-11-03 02:36:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2022-11-03 02:36:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2022-11-03 02:36:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2022-11-03 02:36:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2022-11-03 02:36:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2022-11-03 02:36:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 02:36:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 02:36:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2022-11-03 02:36:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2022-11-03 02:36:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 02:36:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 02:36:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-11-03 02:36:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-11-03 02:36:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:36:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2022-11-03 02:36:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2022-11-03 02:36:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2022-11-03 02:36:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2022-11-03 02:36:44,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:36:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:36:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:36:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:36:45,531 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:36:45,534 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:36:45,636 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:37:02,345 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:37:07,634 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:37:07,635 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:37:07,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:07 BoogieIcfgContainer [2022-11-03 02:37:07,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:37:07,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:37:07,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:37:07,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:37:07,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:36:39" (1/3) ... [2022-11-03 02:37:07,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e3521c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:07, skipping insertion in model container [2022-11-03 02:37:07,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:36:42" (2/3) ... [2022-11-03 02:37:07,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e3521c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:07, skipping insertion in model container [2022-11-03 02:37:07,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:07" (3/3) ... [2022-11-03 02:37:07,651 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--osst.ko-entry_point.cil.out.i [2022-11-03 02:37:07,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:37:07,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:37:07,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:37:07,772 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;@444881b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:37:07,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:37:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 2267 states, 1530 states have (on average 1.4071895424836602) internal successors, (2153), 1568 states have internal predecessors, (2153), 638 states have call successors, (638), 98 states have call predecessors, (638), 97 states have return successors, (627), 624 states have call predecessors, (627), 627 states have call successors, (627) [2022-11-03 02:37:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-03 02:37:07,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:07,812 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:07,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1831164654, now seen corresponding path program 1 times [2022-11-03 02:37:07,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:07,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700303722] [2022-11-03 02:37:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:07,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 02:37:09,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:09,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700303722] [2022-11-03 02:37:09,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700303722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:09,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:09,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:37:09,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385847191] [2022-11-03 02:37:09,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:09,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:37:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:09,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:37:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:37:09,264 INFO L87 Difference]: Start difference. First operand has 2267 states, 1530 states have (on average 1.4071895424836602) internal successors, (2153), 1568 states have internal predecessors, (2153), 638 states have call successors, (638), 98 states have call predecessors, (638), 97 states have return successors, (627), 624 states have call predecessors, (627), 627 states have call successors, (627) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2022-11-03 02:37:11,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:13,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:18,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:37:20,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:37:24,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:26,834 INFO L93 Difference]: Finished difference Result 4716 states and 7161 transitions. [2022-11-03 02:37:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:37:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 392 [2022-11-03 02:37:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:26,879 INFO L225 Difference]: With dead ends: 4716 [2022-11-03 02:37:26,879 INFO L226 Difference]: Without dead ends: 2486 [2022-11-03 02:37:26,910 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 02:37:26,913 INFO L413 NwaCegarLoop]: 3089 mSDtfsCounter, 379 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 6074 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:26,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 6074 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 750 Invalid, 5 Unknown, 0 Unchecked, 17.2s Time] [2022-11-03 02:37:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2022-11-03 02:37:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2471. [2022-11-03 02:37:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 1682 states have (on average 1.3977407847800238) internal successors, (2351), 1708 states have internal predecessors, (2351), 671 states have call successors, (671), 118 states have call predecessors, (671), 117 states have return successors, (662), 658 states have call predecessors, (662), 662 states have call successors, (662) [2022-11-03 02:37:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3684 transitions. [2022-11-03 02:37:27,334 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3684 transitions. Word has length 392 [2022-11-03 02:37:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:27,341 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3684 transitions. [2022-11-03 02:37:27,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2022-11-03 02:37:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3684 transitions. [2022-11-03 02:37:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-11-03 02:37:27,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:27,362 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:27,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:37:27,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash 731517945, now seen corresponding path program 1 times [2022-11-03 02:37:27,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:27,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908270271] [2022-11-03 02:37:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 02:37:28,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:28,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908270271] [2022-11-03 02:37:28,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908270271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:28,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:28,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:37:28,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276129858] [2022-11-03 02:37:28,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:28,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:37:28,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:37:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:37:28,325 INFO L87 Difference]: Start difference. First operand 2471 states and 3684 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 02:37:30,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:32,754 WARN L539 Checker$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 02:37:38,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:37:40,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:37:44,827 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 02:37:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:49,042 INFO L93 Difference]: Finished difference Result 7120 states and 10617 transitions. [2022-11-03 02:37:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:37:49,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 401 [2022-11-03 02:37:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:49,084 INFO L225 Difference]: With dead ends: 7120 [2022-11-03 02:37:49,085 INFO L226 Difference]: Without dead ends: 4720 [2022-11-03 02:37:49,101 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 02:37:49,102 INFO L413 NwaCegarLoop]: 4979 mSDtfsCounter, 3097 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 7946 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:49,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3097 Valid, 7946 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 941 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2022-11-03 02:37:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2022-11-03 02:37:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 4711. [2022-11-03 02:37:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4711 states, 3234 states have (on average 1.4007421150278294) internal successors, (4530), 3271 states have internal predecessors, (4530), 1251 states have call successors, (1251), 226 states have call predecessors, (1251), 225 states have return successors, (1242), 1237 states have call predecessors, (1242), 1242 states have call successors, (1242) [2022-11-03 02:37:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4711 states to 4711 states and 7023 transitions. [2022-11-03 02:37:49,328 INFO L78 Accepts]: Start accepts. Automaton has 4711 states and 7023 transitions. Word has length 401 [2022-11-03 02:37:49,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:49,329 INFO L495 AbstractCegarLoop]: Abstraction has 4711 states and 7023 transitions. [2022-11-03 02:37:49,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 02:37:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4711 states and 7023 transitions. [2022-11-03 02:37:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-03 02:37:49,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:49,340 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:37:49,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1538219580, now seen corresponding path program 1 times [2022-11-03 02:37:49,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:49,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679075576] [2022-11-03 02:37:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:49,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 02:37:50,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:50,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679075576] [2022-11-03 02:37:50,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679075576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:50,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:50,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:37:50,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204933486] [2022-11-03 02:37:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:50,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:37:50,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:37:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:37:50,388 INFO L87 Difference]: Start difference. First operand 4711 states and 7023 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2022-11-03 02:37:52,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:54,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:00,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:03,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:06,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:11,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:16,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:22,728 INFO L93 Difference]: Finished difference Result 13813 states and 21160 transitions. [2022-11-03 02:38:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:38:22,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 410 [2022-11-03 02:38:22,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:22,807 INFO L225 Difference]: With dead ends: 13813 [2022-11-03 02:38:22,808 INFO L226 Difference]: Without dead ends: 9173 [2022-11-03 02:38:22,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:38:22,851 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 2367 mSDsluCounter, 8908 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 351 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 12533 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:22,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 12533 Invalid, 1817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [351 Valid, 1461 Invalid, 5 Unknown, 0 Unchecked, 31.8s Time] [2022-11-03 02:38:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9173 states. [2022-11-03 02:38:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9173 to 4713. [2022-11-03 02:38:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 3236 states have (on average 1.400494437577256) internal successors, (4532), 3273 states have internal predecessors, (4532), 1251 states have call successors, (1251), 226 states have call predecessors, (1251), 225 states have return successors, (1242), 1237 states have call predecessors, (1242), 1242 states have call successors, (1242) [2022-11-03 02:38:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 7025 transitions. [2022-11-03 02:38:23,317 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 7025 transitions. Word has length 410 [2022-11-03 02:38:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:23,319 INFO L495 AbstractCegarLoop]: Abstraction has 4713 states and 7025 transitions. [2022-11-03 02:38:23,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2022-11-03 02:38:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 7025 transitions. [2022-11-03 02:38:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-03 02:38:23,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:23,331 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:23,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:38:23,332 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1845524836, now seen corresponding path program 1 times [2022-11-03 02:38:23,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:23,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266303833] [2022-11-03 02:38:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:23,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 02:38:23,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:23,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266303833] [2022-11-03 02:38:23,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266303833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:23,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:23,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:23,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496343904] [2022-11-03 02:38:23,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:23,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:23,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:23,951 INFO L87 Difference]: Start difference. First operand 4713 states and 7025 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:38:25,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:28,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:33,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:34,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:36,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:38,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:42,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:45,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:45,135 INFO L93 Difference]: Finished difference Result 9283 states and 13835 transitions. [2022-11-03 02:38:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 414 [2022-11-03 02:38:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:45,203 INFO L225 Difference]: With dead ends: 9283 [2022-11-03 02:38:45,203 INFO L226 Difference]: Without dead ends: 9280 [2022-11-03 02:38:45,213 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 02:38:45,214 INFO L413 NwaCegarLoop]: 5548 mSDtfsCounter, 3174 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3174 SdHoareTripleChecker+Valid, 8439 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:45,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3174 Valid, 8439 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1024 Invalid, 5 Unknown, 0 Unchecked, 20.9s Time] [2022-11-03 02:38:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9280 states. [2022-11-03 02:38:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9280 to 9274. [2022-11-03 02:38:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9274 states, 6389 states have (on average 1.4024103928627327) internal successors, (8960), 6453 states have internal predecessors, (8960), 2438 states have call successors, (2438), 447 states have call predecessors, (2438), 446 states have return successors, (2429), 2420 states have call predecessors, (2429), 2429 states have call successors, (2429) [2022-11-03 02:38:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 13827 transitions. [2022-11-03 02:38:45,755 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 13827 transitions. Word has length 414 [2022-11-03 02:38:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:45,756 INFO L495 AbstractCegarLoop]: Abstraction has 9274 states and 13827 transitions. [2022-11-03 02:38:45,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:38:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 13827 transitions. [2022-11-03 02:38:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-03 02:38:45,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:45,760 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:45,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:38:45,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:45,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:45,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1377721629, now seen corresponding path program 1 times [2022-11-03 02:38:45,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:45,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213251519] [2022-11-03 02:38:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:45,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 02:38:46,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213251519] [2022-11-03 02:38:46,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213251519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:46,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:46,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202588084] [2022-11-03 02:38:46,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:46,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:46,298 INFO L87 Difference]: Start difference. First operand 9274 states and 13827 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:38:48,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:50,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:55,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:38:57,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:00,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:02,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:05,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:08,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:08,456 INFO L93 Difference]: Finished difference Result 13843 states and 20634 transitions. [2022-11-03 02:39:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:08,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 415 [2022-11-03 02:39:08,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:08,538 INFO L225 Difference]: With dead ends: 13843 [2022-11-03 02:39:08,538 INFO L226 Difference]: Without dead ends: 13840 [2022-11-03 02:39:08,551 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 02:39:08,552 INFO L413 NwaCegarLoop]: 5546 mSDtfsCounter, 3168 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 8440 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:08,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 8440 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1023 Invalid, 6 Unknown, 0 Unchecked, 21.8s Time] [2022-11-03 02:39:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13840 states. [2022-11-03 02:39:09,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13840 to 13834. [2022-11-03 02:39:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13834 states, 9543 states have (on average 1.4030179188934297) internal successors, (13389), 9632 states have internal predecessors, (13389), 3623 states have call successors, (3623), 668 states have call predecessors, (3623), 667 states have return successors, (3614), 3603 states have call predecessors, (3614), 3614 states have call successors, (3614) [2022-11-03 02:39:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13834 states to 13834 states and 20626 transitions. [2022-11-03 02:39:09,318 INFO L78 Accepts]: Start accepts. Automaton has 13834 states and 20626 transitions. Word has length 415 [2022-11-03 02:39:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:09,319 INFO L495 AbstractCegarLoop]: Abstraction has 13834 states and 20626 transitions. [2022-11-03 02:39:09,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:39:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13834 states and 20626 transitions. [2022-11-03 02:39:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-11-03 02:39:09,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:09,323 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:09,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:39:09,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:09,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash 239280767, now seen corresponding path program 1 times [2022-11-03 02:39:09,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:09,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334533566] [2022-11-03 02:39:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 02:39:09,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:09,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334533566] [2022-11-03 02:39:09,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334533566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:09,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:09,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:09,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122931160] [2022-11-03 02:39:09,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:09,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:09,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:09,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:09,845 INFO L87 Difference]: Start difference. First operand 13834 states and 20626 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:39:11,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:14,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:18,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:21,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:26,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:28,665 INFO L93 Difference]: Finished difference Result 24020 states and 35490 transitions. [2022-11-03 02:39:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 416 [2022-11-03 02:39:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:28,819 INFO L225 Difference]: With dead ends: 24020 [2022-11-03 02:39:28,819 INFO L226 Difference]: Without dead ends: 24016 [2022-11-03 02:39:28,837 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 02:39:28,838 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 2268 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 7248 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:28,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 7248 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 859 Invalid, 5 Unknown, 0 Unchecked, 18.1s Time] [2022-11-03 02:39:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2022-11-03 02:39:30,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 24010. [2022-11-03 02:39:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24010 states, 16425 states have (on average 1.3886149162861492) internal successors, (22808), 16595 states have internal predecessors, (22808), 6326 states have call successors, (6326), 1265 states have call predecessors, (6326), 1258 states have return successors, (6341), 6282 states have call predecessors, (6341), 6317 states have call successors, (6341) [2022-11-03 02:39:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24010 states to 24010 states and 35475 transitions. [2022-11-03 02:39:30,311 INFO L78 Accepts]: Start accepts. Automaton has 24010 states and 35475 transitions. Word has length 416 [2022-11-03 02:39:30,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:30,312 INFO L495 AbstractCegarLoop]: Abstraction has 24010 states and 35475 transitions. [2022-11-03 02:39:30,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:39:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 24010 states and 35475 transitions. [2022-11-03 02:39:30,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-11-03 02:39:30,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:30,316 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:30,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:39:30,317 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1173247642, now seen corresponding path program 1 times [2022-11-03 02:39:30,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:30,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326175402] [2022-11-03 02:39:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:30,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 02:39:30,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:30,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326175402] [2022-11-03 02:39:30,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326175402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:30,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:30,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:30,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007121823] [2022-11-03 02:39:30,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:30,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:30,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:30,906 INFO L87 Difference]: Start difference. First operand 24010 states and 35475 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:39:32,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:35,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:40,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:43,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:39:46,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:51,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:51,431 INFO L93 Difference]: Finished difference Result 24023 states and 35488 transitions. [2022-11-03 02:39:51,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:51,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 417 [2022-11-03 02:39:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:51,580 INFO L225 Difference]: With dead ends: 24023 [2022-11-03 02:39:51,581 INFO L226 Difference]: Without dead ends: 24020 [2022-11-03 02:39:51,601 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 02:39:51,603 INFO L413 NwaCegarLoop]: 5548 mSDtfsCounter, 3164 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 8448 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:51,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3164 Valid, 8448 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1022 Invalid, 5 Unknown, 0 Unchecked, 19.7s Time] [2022-11-03 02:39:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24020 states. [2022-11-03 02:39:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24020 to 24013. [2022-11-03 02:39:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24013 states, 16428 states have (on average 1.3886048210372535) internal successors, (22812), 16598 states have internal predecessors, (22812), 6326 states have call successors, (6326), 1265 states have call predecessors, (6326), 1258 states have return successors, (6341), 6282 states have call predecessors, (6341), 6317 states have call successors, (6341) [2022-11-03 02:39:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24013 states to 24013 states and 35479 transitions. [2022-11-03 02:39:53,090 INFO L78 Accepts]: Start accepts. Automaton has 24013 states and 35479 transitions. Word has length 417 [2022-11-03 02:39:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:53,091 INFO L495 AbstractCegarLoop]: Abstraction has 24013 states and 35479 transitions. [2022-11-03 02:39:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:39:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24013 states and 35479 transitions. [2022-11-03 02:39:53,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-11-03 02:39:53,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:53,095 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:53,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:39:53,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:53,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2011950494, now seen corresponding path program 1 times [2022-11-03 02:39:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:53,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370083661] [2022-11-03 02:39:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2022-11-03 02:39:53,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:53,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370083661] [2022-11-03 02:39:53,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370083661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:53,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:53,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:53,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843706420] [2022-11-03 02:39:53,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:53,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:53,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:53,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:53,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:53,645 INFO L87 Difference]: Start difference. First operand 24013 states and 35479 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:39:55,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:58,056 WARN L539 Checker$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 02:40:02,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:40:06,638 WARN L539 Checker$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 02:40:09,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:40:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:13,219 INFO L93 Difference]: Finished difference Result 35829 states and 52225 transitions. [2022-11-03 02:40:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:40:13,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 418 [2022-11-03 02:40:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:13,561 INFO L225 Difference]: With dead ends: 35829 [2022-11-03 02:40:13,562 INFO L226 Difference]: Without dead ends: 35793 [2022-11-03 02:40:13,588 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 02:40:13,589 INFO L413 NwaCegarLoop]: 4583 mSDtfsCounter, 2088 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 7468 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:13,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 7468 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 902 Invalid, 5 Unknown, 0 Unchecked, 18.6s Time] [2022-11-03 02:40:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35793 states. [2022-11-03 02:40:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35793 to 35785. [2022-11-03 02:40:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35785 states, 24228 states have (on average 1.371718672610203) internal successors, (33234), 24496 states have internal predecessors, (33234), 9449 states have call successors, (9449), 2124 states have call predecessors, (9449), 2107 states have return successors, (9472), 9381 states have call predecessors, (9472), 9440 states have call successors, (9472) [2022-11-03 02:40:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35785 states to 35785 states and 52155 transitions. [2022-11-03 02:40:15,659 INFO L78 Accepts]: Start accepts. Automaton has 35785 states and 52155 transitions. Word has length 418 [2022-11-03 02:40:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:15,662 INFO L495 AbstractCegarLoop]: Abstraction has 35785 states and 52155 transitions. [2022-11-03 02:40:15,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:40:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 35785 states and 52155 transitions. [2022-11-03 02:40:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-03 02:40:15,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:15,672 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:40:15,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash -124467811, now seen corresponding path program 1 times [2022-11-03 02:40:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:15,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667600670] [2022-11-03 02:40:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3713 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2022-11-03 02:40:16,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:16,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667600670] [2022-11-03 02:40:16,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667600670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:16,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:16,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:40:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303042847] [2022-11-03 02:40:16,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:16,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:40:16,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:16,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:40:16,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:40:16,371 INFO L87 Difference]: Start difference. First operand 35785 states and 52155 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 02:40:18,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:21,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:26,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:40:29,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:32,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:40:35,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:40:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:41,656 INFO L93 Difference]: Finished difference Result 72046 states and 105509 transitions. [2022-11-03 02:40:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:40:41,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 477 [2022-11-03 02:40:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:41,818 INFO L225 Difference]: With dead ends: 72046 [2022-11-03 02:40:41,818 INFO L226 Difference]: Without dead ends: 36332 [2022-11-03 02:40:42,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:40:42,180 INFO L413 NwaCegarLoop]: 4426 mSDtfsCounter, 4314 mSDsluCounter, 8228 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 270 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 11787 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:42,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4314 Valid, 11787 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 23.6s Time] [2022-11-03 02:40:42,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36332 states. [2022-11-03 02:40:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36332 to 31095. [2022-11-03 02:40:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31095 states, 21007 states have (on average 1.3714952158804208) internal successors, (28811), 21251 states have internal predecessors, (28811), 8186 states have call successors, (8186), 1916 states have call predecessors, (8186), 1901 states have return successors, (8205), 8120 states have call predecessors, (8205), 8177 states have call successors, (8205) [2022-11-03 02:40:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31095 states to 31095 states and 45202 transitions. [2022-11-03 02:40:44,053 INFO L78 Accepts]: Start accepts. Automaton has 31095 states and 45202 transitions. Word has length 477 [2022-11-03 02:40:44,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:44,055 INFO L495 AbstractCegarLoop]: Abstraction has 31095 states and 45202 transitions. [2022-11-03 02:40:44,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 02:40:44,055 INFO L276 IsEmpty]: Start isEmpty. Operand 31095 states and 45202 transitions. [2022-11-03 02:40:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-11-03 02:40:44,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:44,062 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:44,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:40:44,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1071666041, now seen corresponding path program 1 times [2022-11-03 02:40:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:44,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5477347] [2022-11-03 02:40:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:44,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3221 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3216 trivial. 0 not checked. [2022-11-03 02:40:44,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:44,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5477347] [2022-11-03 02:40:44,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5477347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:44,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:44,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:40:44,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378629972] [2022-11-03 02:40:44,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:44,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:40:44,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:40:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:40:44,733 INFO L87 Difference]: Start difference. First operand 31095 states and 45202 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 02:40:46,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:50,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:53,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:40:57,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:00,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:03,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:09,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:09,223 INFO L93 Difference]: Finished difference Result 90131 states and 131066 transitions. [2022-11-03 02:41:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:41:09,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 485 [2022-11-03 02:41:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:09,583 INFO L225 Difference]: With dead ends: 90131 [2022-11-03 02:41:09,584 INFO L226 Difference]: Without dead ends: 59120 [2022-11-03 02:41:09,872 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 02:41:09,873 INFO L413 NwaCegarLoop]: 5568 mSDtfsCounter, 3039 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 8563 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:09,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 8563 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1044 Invalid, 5 Unknown, 0 Unchecked, 22.3s Time] [2022-11-03 02:41:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59120 states. [2022-11-03 02:41:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59120 to 47159. [2022-11-03 02:41:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47159 states, 31933 states have (on average 1.3721541978517522) internal successors, (43817), 32290 states have internal predecessors, (43817), 12415 states have call successors, (12415), 2833 states have call predecessors, (12415), 2810 states have return successors, (12450), 12315 states have call predecessors, (12450), 12406 states have call successors, (12450) [2022-11-03 02:41:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47159 states to 47159 states and 68682 transitions. [2022-11-03 02:41:12,183 INFO L78 Accepts]: Start accepts. Automaton has 47159 states and 68682 transitions. Word has length 485 [2022-11-03 02:41:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:12,185 INFO L495 AbstractCegarLoop]: Abstraction has 47159 states and 68682 transitions. [2022-11-03 02:41:12,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 02:41:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 47159 states and 68682 transitions. [2022-11-03 02:41:12,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-11-03 02:41:12,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:12,197 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:12,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:41:12,197 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1844347013, now seen corresponding path program 1 times [2022-11-03 02:41:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:12,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647471773] [2022-11-03 02:41:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3983 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3983 trivial. 0 not checked. [2022-11-03 02:41:14,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:41:14,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647471773] [2022-11-03 02:41:14,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647471773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:14,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:14,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:14,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683810332] [2022-11-03 02:41:14,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:14,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:14,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:14,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:14,406 INFO L87 Difference]: Start difference. First operand 47159 states and 68682 transitions. Second operand has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 02:41:16,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:20,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:24,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:27,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:30,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:32,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:34,173 WARN L539 Checker$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 02:41:39,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:45,712 INFO L93 Difference]: Finished difference Result 56349 states and 81738 transitions. [2022-11-03 02:41:45,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:41:45,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) Word has length 489 [2022-11-03 02:41:45,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:46,112 INFO L225 Difference]: With dead ends: 56349 [2022-11-03 02:41:46,112 INFO L226 Difference]: Without dead ends: 56346 [2022-11-03 02:41:46,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:46,317 INFO L413 NwaCegarLoop]: 3575 mSDtfsCounter, 2324 mSDsluCounter, 9340 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 547 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 11919 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:46,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2324 Valid, 11919 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 1460 Invalid, 8 Unknown, 0 Unchecked, 29.6s Time] [2022-11-03 02:41:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56346 states. [2022-11-03 02:41:48,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56346 to 56346. [2022-11-03 02:41:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56346 states, 37899 states have (on average 1.3629911079448007) internal successors, (51656), 38322 states have internal predecessors, (51656), 15017 states have call successors, (15017), 3463 states have call predecessors, (15017), 3429 states have return successors, (15052), 14906 states have call predecessors, (15052), 15008 states have call successors, (15052) [2022-11-03 02:41:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56346 states to 56346 states and 81725 transitions. [2022-11-03 02:41:49,231 INFO L78 Accepts]: Start accepts. Automaton has 56346 states and 81725 transitions. Word has length 489 [2022-11-03 02:41:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:49,233 INFO L495 AbstractCegarLoop]: Abstraction has 56346 states and 81725 transitions. [2022-11-03 02:41:49,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 02:41:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 56346 states and 81725 transitions. [2022-11-03 02:41:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-03 02:41:49,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:49,261 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:49,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:41:49,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:49,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:49,262 INFO L85 PathProgramCache]: Analyzing trace with hash -671113685, now seen corresponding path program 1 times [2022-11-03 02:41:49,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:49,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267926378] [2022-11-03 02:41:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3983 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3976 trivial. 0 not checked. [2022-11-03 02:41:49,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:41:49,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267926378] [2022-11-03 02:41:49,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267926378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:49,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:49,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:41:49,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407493067] [2022-11-03 02:41:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:49,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:41:49,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:41:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:49,969 INFO L87 Difference]: Start difference. First operand 56346 states and 81725 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-03 02:41:52,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:55,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:41:58,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:02,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:07,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:42:09,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:42:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:13,237 INFO L93 Difference]: Finished difference Result 150004 states and 216952 transitions. [2022-11-03 02:42:13,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:13,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 488 [2022-11-03 02:42:13,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:13,934 INFO L225 Difference]: With dead ends: 150004 [2022-11-03 02:42:13,934 INFO L226 Difference]: Without dead ends: 93854 [2022-11-03 02:42:14,262 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 02:42:14,263 INFO L413 NwaCegarLoop]: 3631 mSDtfsCounter, 2386 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:14,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 6140 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 754 Invalid, 5 Unknown, 0 Unchecked, 19.2s Time] [2022-11-03 02:42:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93854 states. [2022-11-03 02:42:18,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93854 to 93701. [2022-11-03 02:42:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93701 states, 62953 states have (on average 1.3544072562070115) internal successors, (85264), 63650 states have internal predecessors, (85264), 24909 states have call successors, (24909), 5889 states have call predecessors, (24909), 5838 states have return successors, (24944), 24749 states have call predecessors, (24944), 24900 states have call successors, (24944) [2022-11-03 02:42:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93701 states to 93701 states and 135117 transitions. [2022-11-03 02:42:19,162 INFO L78 Accepts]: Start accepts. Automaton has 93701 states and 135117 transitions. Word has length 488 [2022-11-03 02:42:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:19,163 INFO L495 AbstractCegarLoop]: Abstraction has 93701 states and 135117 transitions. [2022-11-03 02:42:19,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-03 02:42:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 93701 states and 135117 transitions. [2022-11-03 02:42:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-03 02:42:19,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:19,169 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:19,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:42:19,170 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1193680068, now seen corresponding path program 1 times [2022-11-03 02:42:19,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:19,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013156373] [2022-11-03 02:42:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3985 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-11-03 02:42:20,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:20,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013156373] [2022-11-03 02:42:20,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013156373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:20,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:20,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:42:20,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279015701] [2022-11-03 02:42:20,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:20,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:42:20,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:42:20,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:20,248 INFO L87 Difference]: Start difference. First operand 93701 states and 135117 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:42:22,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:25,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:42:28,437 WARN L539 Checker$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 02:42:34,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:42:38,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:38,495 INFO L93 Difference]: Finished difference Result 99698 states and 143515 transitions. [2022-11-03 02:42:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:38,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 491 [2022-11-03 02:42:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:39,037 INFO L225 Difference]: With dead ends: 99698 [2022-11-03 02:42:39,037 INFO L226 Difference]: Without dead ends: 99695 [2022-11-03 02:42:39,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:42:39,092 INFO L413 NwaCegarLoop]: 4128 mSDtfsCounter, 2333 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 6187 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:39,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2333 Valid, 6187 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 755 Invalid, 4 Unknown, 0 Unchecked, 14.9s Time] [2022-11-03 02:42:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99695 states. [2022-11-03 02:42:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99695 to 99691. [2022-11-03 02:42:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99691 states, 66784 states have (on average 1.3509972448490657) internal successors, (90225), 67541 states have internal predecessors, (90225), 26609 states have call successors, (26609), 6352 states have call predecessors, (26609), 6297 states have return successors, (26644), 26439 states have call predecessors, (26644), 26600 states have call successors, (26644) [2022-11-03 02:42:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99691 states to 99691 states and 143478 transitions. [2022-11-03 02:42:43,967 INFO L78 Accepts]: Start accepts. Automaton has 99691 states and 143478 transitions. Word has length 491 [2022-11-03 02:42:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:43,967 INFO L495 AbstractCegarLoop]: Abstraction has 99691 states and 143478 transitions. [2022-11-03 02:42:43,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:42:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 99691 states and 143478 transitions. [2022-11-03 02:42:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-11-03 02:42:43,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:43,980 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:42:43,980 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash 150734630, now seen corresponding path program 1 times [2022-11-03 02:42:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:43,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983488760] [2022-11-03 02:42:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4013 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 3970 trivial. 0 not checked. [2022-11-03 02:42:45,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:45,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983488760] [2022-11-03 02:42:45,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983488760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:42:45,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431400397] [2022-11-03 02:42:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:45,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:45,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:45,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:45,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e388edc-1e8e-46df-a3b2-35cc8d4e9d7e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:42:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:48,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 5308 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:42:48,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4013 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3983 trivial. 0 not checked. [2022-11-03 02:42:48,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:48,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431400397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:48,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:42:48,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-03 02:42:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432865292] [2022-11-03 02:42:48,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:48,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:42:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:42:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:42:48,394 INFO L87 Difference]: Start difference. First operand 99691 states and 143478 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:42:51,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:53,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:43:00,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:43:03,512 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 []