./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-08_1a-drivers--md--dm-cache.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_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/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_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/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_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/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 18adc7ce46ffd1a3ff82c3c7fa6ef66e3ed2399c064dd9dfbe8501509215a2b1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:28:06,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:28:06,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:28:06,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:28:06,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:28:06,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:28:06,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:28:06,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:28:06,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:28:06,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:28:06,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:28:06,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:28:06,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:28:06,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:28:06,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:28:06,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:28:06,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:28:06,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:28:06,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:28:06,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:28:06,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:28:06,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:28:06,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:28:06,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:28:06,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:28:06,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:28:06,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:28:06,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:28:06,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:28:06,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:28:06,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:28:06,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:28:06,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:28:06,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:28:06,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:28:06,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:28:06,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:28:06,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:28:06,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:28:06,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:28:06,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:28:06,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:28:06,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:28:06,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:28:06,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:28:06,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:28:06,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:28:06,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:28:06,461 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:28:06,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:28:06,462 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:28:06,462 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:28:06,462 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:28:06,463 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:28:06,463 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:28:06,463 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:28:06,463 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:28:06,464 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:28:06,464 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:28:06,464 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:28:06,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:28:06,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:28:06,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:28:06,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:28:06,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:28:06,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:28:06,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:28:06,467 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:28:06,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:28:06,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:28:06,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:28:06,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:06,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:28:06,468 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:28:06,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:28:06,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:28:06,469 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:28:06,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:28:06,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:28:06,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:28:06,470 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_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18adc7ce46ffd1a3ff82c3c7fa6ef66e3ed2399c064dd9dfbe8501509215a2b1 [2022-11-03 03:28:06,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:28:06,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:28:06,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:28:06,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:28:06,864 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:28:06,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2022-11-03 03:28:06,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/data/776247081/58aa3c4987784aa1b91ed28b160ea8e3/FLAG074762fc1 [2022-11-03 03:28:07,922 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:28:07,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2022-11-03 03:28:07,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/data/776247081/58aa3c4987784aa1b91ed28b160ea8e3/FLAG074762fc1 [2022-11-03 03:28:08,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/data/776247081/58aa3c4987784aa1b91ed28b160ea8e3 [2022-11-03 03:28:08,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:28:08,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:28:08,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:08,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:28:08,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:28:08,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:08" (1/1) ... [2022-11-03 03:28:08,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d52439c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:08, skipping insertion in model container [2022-11-03 03:28:08,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:08" (1/1) ... [2022-11-03 03:28:08,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:28:08,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:28:12,763 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_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i[376341,376354] [2022-11-03 03:28:12,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:12,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:28:13,520 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_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i[376341,376354] [2022-11-03 03:28:13,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:13,792 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:28:13,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13 WrapperNode [2022-11-03 03:28:13,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:13,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:13,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:28:13,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:28:13,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:13,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,318 INFO L138 Inliner]: procedures = 595, calls = 3937, calls flagged for inlining = 264, calls inlined = 257, statements flattened = 9795 [2022-11-03 03:28:14,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:14,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:28:14,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:28:14,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:28:14,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:28:14,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:28:14,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:28:14,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:28:14,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (1/1) ... [2022-11-03 03:28:14,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:14,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:14,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:28:14,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:28:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure resize_cache_dev [2022-11-03 03:28:14,903 INFO L138 BoogieDeclarations]: Found implementation of procedure resize_cache_dev [2022-11-03 03:28:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure block_size_is_power_of_two [2022-11-03 03:28:14,903 INFO L138 BoogieDeclarations]: Found implementation of procedure block_size_is_power_of_two [2022-11-03 03:28:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 03:28:14,904 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 03:28:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure dm_block_manager_destroy [2022-11-03 03:28:14,904 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_block_manager_destroy [2022-11-03 03:28:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure bio_endio [2022-11-03 03:28:14,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_endio [2022-11-03 03:28:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_sm_root [2022-11-03 03:28:14,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_sm_root [2022-11-03 03:28:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure bio_writes_complete_block [2022-11-03 03:28:14,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_writes_complete_block [2022-11-03 03:28:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-03 03:28:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure dm_tm_pre_commit [2022-11-03 03:28:14,906 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_tm_pre_commit [2022-11-03 03:28:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure i_size_read [2022-11-03 03:28:14,906 INFO L138 BoogieDeclarations]: Found implementation of procedure i_size_read [2022-11-03 03:28:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure cache_map [2022-11-03 03:28:14,906 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_map [2022-11-03 03:28:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:28:14,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:28:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure process_migrations [2022-11-03 03:28:14,907 INFO L138 BoogieDeclarations]: Found implementation of procedure process_migrations [2022-11-03 03:28:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure remap_cell_to_origin_clear_discard [2022-11-03 03:28:14,907 INFO L138 BoogieDeclarations]: Found implementation of procedure remap_cell_to_origin_clear_discard [2022-11-03 03:28:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure dm_bm_checksum [2022-11-03 03:28:14,908 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_bm_checksum [2022-11-03 03:28:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 03:28:14,908 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 03:28:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure put_policy [2022-11-03 03:28:14,909 INFO L138 BoogieDeclarations]: Found implementation of procedure put_policy [2022-11-03 03:28:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_tick_bio_needed [2022-11-03 03:28:14,909 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_tick_bio_needed [2022-11-03 03:28:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:28:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:28:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure update_flags [2022-11-03 03:28:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure update_flags [2022-11-03 03:28:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure calc_discard_block_range [2022-11-03 03:28:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_discard_block_range [2022-11-03 03:28:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~sector_t~0~X~~sector_t~0~X~$Pointer$~TO~int [2022-11-03 03:28:14,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~sector_t~0~X~~sector_t~0~X~$Pointer$~TO~int [2022-11-03 03:28:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release_no_holder [2022-11-03 03:28:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure free_bitset [2022-11-03 03:28:14,912 INFO L138 BoogieDeclarations]: Found implementation of procedure free_bitset [2022-11-03 03:28:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure commit_if_needed [2022-11-03 03:28:14,913 INFO L138 BoogieDeclarations]: Found implementation of procedure commit_if_needed [2022-11-03 03:28:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 03:28:14,914 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 03:28:14,914 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 03:28:14,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 03:28:14,914 INFO L130 BoogieDeclarations]: Found specification of procedure get_per_bio_data [2022-11-03 03:28:14,914 INFO L138 BoogieDeclarations]: Found implementation of procedure get_per_bio_data [2022-11-03 03:28:14,915 INFO L130 BoogieDeclarations]: Found specification of procedure remap_to_origin_then_cache [2022-11-03 03:28:14,915 INFO L138 BoogieDeclarations]: Found implementation of procedure remap_to_origin_then_cache [2022-11-03 03:28:14,916 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:28:14,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:28:14,916 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_remove_mapping [2022-11-03 03:28:14,917 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_remove_mapping [2022-11-03 03:28:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure dblock_to_oblock [2022-11-03 03:28:14,917 INFO L138 BoogieDeclarations]: Found implementation of procedure dblock_to_oblock [2022-11-03 03:28:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:28:14,917 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:28:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure remap_to_origin [2022-11-03 03:28:14,918 INFO L138 BoogieDeclarations]: Found implementation of procedure remap_to_origin [2022-11-03 03:28:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bitset [2022-11-03 03:28:14,918 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bitset [2022-11-03 03:28:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure bio_detain_range [2022-11-03 03:28:14,918 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_detain_range [2022-11-03 03:28:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure from_cblock [2022-11-03 03:28:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure from_cblock [2022-11-03 03:28:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure writethrough_mode [2022-11-03 03:28:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure writethrough_mode [2022-11-03 03:28:14,919 INFO L130 BoogieDeclarations]: Found specification of procedure write_dirty_bitset [2022-11-03 03:28:14,919 INFO L138 BoogieDeclarations]: Found implementation of procedure write_dirty_bitset [2022-11-03 03:28:14,920 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:28:14,920 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:28:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure writeback_mode [2022-11-03 03:28:14,921 INFO L138 BoogieDeclarations]: Found implementation of procedure writeback_mode [2022-11-03 03:28:14,921 INFO L130 BoogieDeclarations]: Found specification of procedure cache_postsuspend [2022-11-03 03:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_postsuspend [2022-11-03 03:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure prealloc_get_migration [2022-11-03 03:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure prealloc_get_migration [2022-11-03 03:28:14,922 INFO L130 BoogieDeclarations]: Found specification of procedure issue_copy_or_discard [2022-11-03 03:28:14,922 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_copy_or_discard [2022-11-03 03:28:14,923 INFO L130 BoogieDeclarations]: Found specification of procedure cache_dtr [2022-11-03 03:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_dtr [2022-11-03 03:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-03 03:28:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-03 03:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 03:28:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_prison_cell [2022-11-03 03:28:14,925 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_prison_cell [2022-11-03 03:28:14,925 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_get_version [2022-11-03 03:28:14,926 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_get_version [2022-11-03 03:28:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:28:14,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:28:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:28:14,926 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:28:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure __create_persistent_data_objects [2022-11-03 03:28:14,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_persistent_data_objects [2022-11-03 03:28:14,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:28:14,927 INFO L130 BoogieDeclarations]: Found specification of procedure get_per_bio_data_size [2022-11-03 03:28:14,928 INFO L138 BoogieDeclarations]: Found implementation of procedure get_per_bio_data_size [2022-11-03 03:28:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure dm_array_resize [2022-11-03 03:28:14,928 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_array_resize [2022-11-03 03:28:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 03:28:14,928 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 03:28:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure accounted_request [2022-11-03 03:28:14,929 INFO L138 BoogieDeclarations]: Found implementation of procedure accounted_request [2022-11-03 03:28:14,930 INFO L130 BoogieDeclarations]: Found specification of procedure pack_value [2022-11-03 03:28:14,933 INFO L138 BoogieDeclarations]: Found implementation of procedure pack_value [2022-11-03 03:28:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 03:28:14,933 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 03:28:14,933 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_empty [2022-11-03 03:28:14,935 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_empty [2022-11-03 03:28:14,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:28:14,936 INFO L130 BoogieDeclarations]: Found specification of procedure clear_discard [2022-11-03 03:28:14,936 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_discard [2022-11-03 03:28:14,936 INFO L130 BoogieDeclarations]: Found specification of procedure prealloc_get_cell [2022-11-03 03:28:14,942 INFO L138 BoogieDeclarations]: Found implementation of procedure prealloc_get_cell [2022-11-03 03:28:14,942 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:28:14,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:28:14,942 INFO L130 BoogieDeclarations]: Found specification of procedure process_deferred_flush_bios [2022-11-03 03:28:14,943 INFO L138 BoogieDeclarations]: Found implementation of procedure process_deferred_flush_bios [2022-11-03 03:28:14,943 INFO L130 BoogieDeclarations]: Found specification of procedure cell_defer [2022-11-03 03:28:14,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cell_defer [2022-11-03 03:28:14,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:28:14,943 INFO L130 BoogieDeclarations]: Found specification of procedure dm_tm_commit [2022-11-03 03:28:14,943 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_tm_commit [2022-11-03 03:28:14,943 INFO L130 BoogieDeclarations]: Found specification of procedure sb_check [2022-11-03 03:28:14,943 INFO L138 BoogieDeclarations]: Found implementation of procedure sb_check [2022-11-03 03:28:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_destroy [2022-11-03 03:28:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_destroy [2022-11-03 03:28:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure cache_device_name [2022-11-03 03:28:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_device_name [2022-11-03 03:28:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:28:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure get_policy_once [2022-11-03 03:28:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure get_policy_once [2022-11-03 03:28:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure issue [2022-11-03 03:28:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure issue [2022-11-03 03:28:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:28:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:28:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure inc_and_issue [2022-11-03 03:28:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure inc_and_issue [2022-11-03 03:28:14,945 INFO L130 BoogieDeclarations]: Found specification of procedure write_discard_bitset [2022-11-03 03:28:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure write_discard_bitset [2022-11-03 03:28:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure sync_metadata [2022-11-03 03:28:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_metadata [2022-11-03 03:28:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-03 03:28:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-03 03:28:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure set_discard_range [2022-11-03 03:28:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure set_discard_range [2022-11-03 03:28:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure policy_unchanged [2022-11-03 03:28:14,947 INFO L138 BoogieDeclarations]: Found implementation of procedure policy_unchanged [2022-11-03 03:28:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 03:28:14,947 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 03:28:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure set_config_value [2022-11-03 03:28:14,947 INFO L138 BoogieDeclarations]: Found implementation of procedure set_config_value [2022-11-03 03:28:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure stop_worker [2022-11-03 03:28:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_worker [2022-11-03 03:28:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_12 [2022-11-03 03:28:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_12 [2022-11-03 03:28:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:28:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:28:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure policy_force_mapping [2022-11-03 03:28:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure policy_force_mapping [2022-11-03 03:28:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure remap_to_origin_clear_discard [2022-11-03 03:28:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure remap_to_origin_clear_discard [2022-11-03 03:28:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure __save_sm_root [2022-11-03 03:28:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __save_sm_root [2022-11-03 03:28:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:28:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-03 03:28:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-03 03:28:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure blocks_are_unmapped_or_clean [2022-11-03 03:28:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure blocks_are_unmapped_or_clean [2022-11-03 03:28:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 03:28:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 03:28:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:28:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure do_worker [2022-11-03 03:28:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure do_worker [2022-11-03 03:28:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2022-11-03 03:28:14,951 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2022-11-03 03:28:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure build_key [2022-11-03 03:28:14,952 INFO L138 BoogieDeclarations]: Found implementation of procedure build_key [2022-11-03 03:28:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:28:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:28:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:28:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure write_hints [2022-11-03 03:28:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure write_hints [2022-11-03 03:28:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-03 03:28:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-03 03:28:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure __find_policy [2022-11-03 03:28:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __find_policy [2022-11-03 03:28:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure policy_tick [2022-11-03 03:28:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure policy_tick [2022-11-03 03:28:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure cache_resume [2022-11-03 03:28:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_resume [2022-11-03 03:28:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2022-11-03 03:28:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2022-11-03 03:28:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_close [2022-11-03 03:28:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_close [2022-11-03 03:28:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_get_hint_size [2022-11-03 03:28:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_get_hint_size [2022-11-03 03:28:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 03:28:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 03:28:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_pop [2022-11-03 03:28:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_pop [2022-11-03 03:28:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure free_migration [2022-11-03 03:28:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure free_migration [2022-11-03 03:28:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 03:28:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 03:28:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure passthrough_mode [2022-11-03 03:28:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure passthrough_mode [2022-11-03 03:28:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure get_cache_mode [2022-11-03 03:28:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cache_mode [2022-11-03 03:28:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure to_cblock [2022-11-03 03:28:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure to_cblock [2022-11-03 03:28:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure cache_iterate_devices [2022-11-03 03:28:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_iterate_devices [2022-11-03 03:28:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure to_oblock [2022-11-03 03:28:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure to_oblock [2022-11-03 03:28:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-03 03:28:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-03 03:28:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure block_div [2022-11-03 03:28:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure block_div [2022-11-03 03:28:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:28:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:28:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:28:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:28:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure oblocks_per_dblock [2022-11-03 03:28:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure oblocks_per_dblock [2022-11-03 03:28:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure policy_set_dirty [2022-11-03 03:28:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure policy_set_dirty [2022-11-03 03:28:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure set_cache_size [2022-11-03 03:28:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure set_cache_size [2022-11-03 03:28:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure cache_message [2022-11-03 03:28:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_message [2022-11-03 03:28:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 03:28:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 03:28:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure inc_ds [2022-11-03 03:28:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure inc_ds [2022-11-03 03:28:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:28:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:28:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure inc_hit_counter [2022-11-03 03:28:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure inc_hit_counter [2022-11-03 03:28:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:28:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:28:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_11 [2022-11-03 03:28:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_11 [2022-11-03 03:28:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_visit_release [2022-11-03 03:28:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cell_visit_release [2022-11-03 03:28:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure commit [2022-11-03 03:28:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure commit [2022-11-03 03:28:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2022-11-03 03:28:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2022-11-03 03:28:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure cache_io_hints [2022-11-03 03:28:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_io_hints [2022-11-03 03:28:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure cache_end_io [2022-11-03 03:28:15,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_end_io [2022-11-03 03:28:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure accounted_begin [2022-11-03 03:28:15,040 INFO L138 BoogieDeclarations]: Found implementation of procedure accounted_begin [2022-11-03 03:28:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:28:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:28:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:28:15,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:28:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_metadata_abort [2022-11-03 03:28:15,040 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_metadata_abort [2022-11-03 03:28:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure read_superblock_fields [2022-11-03 03:28:15,040 INFO L138 BoogieDeclarations]: Found implementation of procedure read_superblock_fields [2022-11-03 03:28:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure blk_limits_io_min [2022-11-03 03:28:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_limits_io_min [2022-11-03 03:28:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure inc_miss_counter [2022-11-03 03:28:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure inc_miss_counter [2022-11-03 03:28:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure migration_failure [2022-11-03 03:28:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_failure [2022-11-03 03:28:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure dm_hook_bio [2022-11-03 03:28:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_hook_bio [2022-11-03 03:28:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure dm_array_set_value [2022-11-03 03:28:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_array_set_value [2022-11-03 03:28:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure free_io_migration [2022-11-03 03:28:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure free_io_migration [2022-11-03 03:28:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 03:28:15,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 03:28:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure do_waker [2022-11-03 03:28:15,042 INFO L138 BoogieDeclarations]: Found implementation of procedure do_waker [2022-11-03 03:28:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure get_dev_size [2022-11-03 03:28:15,042 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dev_size [2022-11-03 03:28:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure is_discarded_oblock [2022-11-03 03:28:15,047 INFO L138 BoogieDeclarations]: Found implementation of procedure is_discarded_oblock [2022-11-03 03:28:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_bitset [2022-11-03 03:28:15,048 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_bitset [2022-11-03 03:28:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:28:15,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:28:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure __setup_mapping_info [2022-11-03 03:28:15,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __setup_mapping_info [2022-11-03 03:28:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:28:15,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:28:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-03 03:28:15,049 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-03 03:28:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure bitset_size_in_bytes [2022-11-03 03:28:15,049 INFO L138 BoogieDeclarations]: Found implementation of procedure bitset_size_in_bytes [2022-11-03 03:28:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 03:28:15,050 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 03:28:15,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:28:15,050 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:28:15,050 INFO L130 BoogieDeclarations]: Found specification of procedure dm_bm_is_read_only [2022-11-03 03:28:15,050 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_bm_is_read_only [2022-11-03 03:28:15,050 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:28:15,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:28:15,050 INFO L130 BoogieDeclarations]: Found specification of procedure dm_block_location [2022-11-03 03:28:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_block_location [2022-11-03 03:28:15,051 INFO L130 BoogieDeclarations]: Found specification of procedure dm_read_arg_group [2022-11-03 03:28:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_read_arg_group [2022-11-03 03:28:15,051 INFO L130 BoogieDeclarations]: Found specification of procedure clear_dirty [2022-11-03 03:28:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_dirty [2022-11-03 03:28:15,051 INFO L130 BoogieDeclarations]: Found specification of procedure dm_kcopyd_copy [2022-11-03 03:28:15,051 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_kcopyd_copy [2022-11-03 03:28:15,052 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 03:28:15,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 03:28:15,052 INFO L130 BoogieDeclarations]: Found specification of procedure quiesce_migration [2022-11-03 03:28:15,052 INFO L138 BoogieDeclarations]: Found implementation of procedure quiesce_migration [2022-11-03 03:28:15,052 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_event [2022-11-03 03:28:15,052 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_event [2022-11-03 03:28:15,052 INFO L130 BoogieDeclarations]: Found specification of procedure blk_limits_io_opt [2022-11-03 03:28:15,053 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_limits_io_opt [2022-11-03 03:28:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure dm_unregister_target [2022-11-03 03:28:15,053 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_unregister_target [2022-11-03 03:28:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 03:28:15,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 03:28:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:28:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:28:15,053 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:28:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-03 03:28:15,054 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-03 03:28:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure free_prison_cell [2022-11-03 03:28:15,054 INFO L138 BoogieDeclarations]: Found implementation of procedure free_prison_cell [2022-11-03 03:28:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:28:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure __format_metadata [2022-11-03 03:28:15,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __format_metadata [2022-11-03 03:28:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-03 03:28:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-03 03:28:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure discard_or_flush [2022-11-03 03:28:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure discard_or_flush [2022-11-03 03:28:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure prealloc_data_structs [2022-11-03 03:28:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure prealloc_data_structs [2022-11-03 03:28:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-03 03:28:15,056 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-03 03:28:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure unpack_value [2022-11-03 03:28:15,056 INFO L138 BoogieDeclarations]: Found implementation of procedure unpack_value [2022-11-03 03:28:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure dm_sm_destroy [2022-11-03 03:28:15,056 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_sm_destroy [2022-11-03 03:28:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure superblock_read_lock [2022-11-03 03:28:15,056 INFO L138 BoogieDeclarations]: Found implementation of procedure superblock_read_lock [2022-11-03 03:28:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:28:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure dm_block_data [2022-11-03 03:28:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_block_data [2022-11-03 03:28:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure from_dblock [2022-11-03 03:28:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure from_dblock [2022-11-03 03:28:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:28:15,057 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:28:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 03:28:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 03:28:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:28:15,058 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:28:15,058 INFO L130 BoogieDeclarations]: Found specification of procedure cache_bvec_merge [2022-11-03 03:28:15,059 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_bvec_merge [2022-11-03 03:28:15,059 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:28:15,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:28:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 03:28:15,060 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 03:28:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure is_dirty [2022-11-03 03:28:15,060 INFO L138 BoogieDeclarations]: Found implementation of procedure is_dirty [2022-11-03 03:28:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure __open_or_format_metadata [2022-11-03 03:28:15,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __open_or_format_metadata [2022-11-03 03:28:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_init [2022-11-03 03:28:15,062 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_init [2022-11-03 03:28:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 03:28:15,062 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 03:28:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure dm_array_get_value [2022-11-03 03:28:15,062 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_array_get_value [2022-11-03 03:28:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure dm_array_empty [2022-11-03 03:28:15,063 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_array_empty [2022-11-03 03:28:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure set_dirty [2022-11-03 03:28:15,063 INFO L138 BoogieDeclarations]: Found implementation of procedure set_dirty [2022-11-03 03:28:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2022-11-03 03:28:15,063 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2022-11-03 03:28:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure dm_array_walk [2022-11-03 03:28:15,064 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_array_walk [2022-11-03 03:28:15,064 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 03:28:15,064 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 03:28:15,064 INFO L130 BoogieDeclarations]: Found specification of procedure remap_to_cache [2022-11-03 03:28:15,064 INFO L138 BoogieDeclarations]: Found implementation of procedure remap_to_cache [2022-11-03 03:28:15,064 INFO L130 BoogieDeclarations]: Found specification of procedure oblock_to_dblock [2022-11-03 03:28:15,064 INFO L138 BoogieDeclarations]: Found implementation of procedure oblock_to_dblock [2022-11-03 03:28:15,064 INFO L130 BoogieDeclarations]: Found specification of procedure wake_worker [2022-11-03 03:28:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_worker [2022-11-03 03:28:15,065 INFO L130 BoogieDeclarations]: Found specification of procedure prealloc_free_structs [2022-11-03 03:28:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure prealloc_free_structs [2022-11-03 03:28:15,065 INFO L130 BoogieDeclarations]: Found specification of procedure dm_disk_bitset_init [2022-11-03 03:28:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_disk_bitset_init [2022-11-03 03:28:15,065 INFO L130 BoogieDeclarations]: Found specification of procedure set_discard [2022-11-03 03:28:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure set_discard [2022-11-03 03:28:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure get_bio_block [2022-11-03 03:28:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bio_block [2022-11-03 03:28:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure destroy [2022-11-03 03:28:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy [2022-11-03 03:28:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure dm_bm_read_lock [2022-11-03 03:28:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_bm_read_lock [2022-11-03 03:28:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:28:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:28:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cell_release [2022-11-03 03:28:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure is_quiescing [2022-11-03 03:28:15,067 INFO L138 BoogieDeclarations]: Found implementation of procedure is_quiescing [2022-11-03 03:28:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:28:15,067 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:28:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort_transaction [2022-11-03 03:28:15,067 INFO L138 BoogieDeclarations]: Found implementation of procedure abort_transaction [2022-11-03 03:28:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:28:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure set_cache_mode [2022-11-03 03:28:15,068 INFO L138 BoogieDeclarations]: Found implementation of procedure set_cache_mode [2022-11-03 03:28:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure dm_array_info_init [2022-11-03 03:28:15,068 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_array_info_init [2022-11-03 03:28:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:28:15,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:28:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure from_oblock [2022-11-03 03:28:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure from_oblock [2022-11-03 03:28:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:28:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:28:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure superblock_lock [2022-11-03 03:28:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure superblock_lock [2022-11-03 03:28:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_copy [2022-11-03 03:28:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_copy [2022-11-03 03:28:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 03:28:15,070 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 03:28:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure dm_cache_policy_get_name [2022-11-03 03:28:15,070 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_cache_policy_get_name [2022-11-03 03:28:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure spare_migration_bandwidth [2022-11-03 03:28:15,070 INFO L138 BoogieDeclarations]: Found implementation of procedure spare_migration_bandwidth [2022-11-03 03:28:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_add [2022-11-03 03:28:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_add [2022-11-03 03:28:15,071 INFO L130 BoogieDeclarations]: Found specification of procedure remap_cell_to_cache_dirty [2022-11-03 03:28:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure remap_cell_to_cache_dirty [2022-11-03 03:28:15,071 INFO L130 BoogieDeclarations]: Found specification of procedure prealloc_put_cell [2022-11-03 03:28:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure prealloc_put_cell [2022-11-03 03:28:15,071 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2022-11-03 03:28:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2022-11-03 03:28:15,071 INFO L130 BoogieDeclarations]: Found specification of procedure defer_bio [2022-11-03 03:28:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure defer_bio [2022-11-03 03:28:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure metadata_operation_failed [2022-11-03 03:28:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure metadata_operation_failed [2022-11-03 03:28:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:28:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:28:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure dm_shift_arg [2022-11-03 03:28:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_shift_arg [2022-11-03 03:28:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_requests [2022-11-03 03:28:15,073 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_requests [2022-11-03 03:28:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 03:28:15,073 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 03:28:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_merge [2022-11-03 03:28:15,073 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_merge [2022-11-03 03:28:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure policy_remove_mapping [2022-11-03 03:28:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure policy_remove_mapping [2022-11-03 03:28:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure to_dblock [2022-11-03 03:28:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure to_dblock [2022-11-03 03:28:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-03 03:28:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-03 03:28:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure bio_detain [2022-11-03 03:28:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_detain [2022-11-03 03:28:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-03 03:28:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-03 03:28:15,075 INFO L130 BoogieDeclarations]: Found specification of procedure at_least_one_arg [2022-11-03 03:28:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure at_least_one_arg [2022-11-03 03:28:15,075 INFO L130 BoogieDeclarations]: Found specification of procedure __queue_quiesced_migration [2022-11-03 03:28:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __queue_quiesced_migration [2022-11-03 03:28:15,075 INFO L130 BoogieDeclarations]: Found specification of procedure inc_io_migrations [2022-11-03 03:28:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure inc_io_migrations [2022-11-03 03:28:15,076 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2022-11-03 03:28:15,076 INFO L130 BoogieDeclarations]: Found specification of procedure policy_map [2022-11-03 03:28:15,076 INFO L138 BoogieDeclarations]: Found implementation of procedure policy_map [2022-11-03 03:28:15,076 INFO L130 BoogieDeclarations]: Found specification of procedure dm_bio_prison_free_cell [2022-11-03 03:28:15,076 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_bio_prison_free_cell [2022-11-03 03:28:15,076 INFO L130 BoogieDeclarations]: Found specification of procedure dm_tm_destroy [2022-11-03 03:28:15,076 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_tm_destroy [2022-11-03 03:28:15,076 INFO L130 BoogieDeclarations]: Found specification of procedure complete_migration [2022-11-03 03:28:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_migration [2022-11-03 03:28:15,077 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 03:28:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 03:28:15,077 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:28:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:28:15,077 INFO L130 BoogieDeclarations]: Found specification of procedure __destroy_persistent_data_objects [2022-11-03 03:28:15,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __destroy_persistent_data_objects [2022-11-03 03:28:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure lookup [2022-11-03 03:28:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure lookup [2022-11-03 03:28:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure process_invalidation_request [2022-11-03 03:28:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure process_invalidation_request [2022-11-03 03:28:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure migration_success_pre_commit [2022-11-03 03:28:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure migration_success_pre_commit [2022-11-03 03:28:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:28:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure cache_status [2022-11-03 03:28:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_status [2022-11-03 03:28:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure dm_bm_unlock [2022-11-03 03:28:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_bm_unlock [2022-11-03 03:28:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2022-11-03 03:28:15,080 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2022-11-03 03:28:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 03:28:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dm_oblock_t~0~TO~VOID [2022-11-03 03:28:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dm_oblock_t~0~TO~VOID [2022-11-03 03:28:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure process_cell [2022-11-03 03:28:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure process_cell [2022-11-03 03:28:16,836 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:28:16,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:28:17,824 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:28:30,730 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:28:32,823 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:28:32,824 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:28:32,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:32 BoogieIcfgContainer [2022-11-03 03:28:32,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:28:32,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:28:32,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:28:32,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:28:32,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:28:08" (1/3) ... [2022-11-03 03:28:32,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ba4500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:32, skipping insertion in model container [2022-11-03 03:28:32,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:13" (2/3) ... [2022-11-03 03:28:32,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ba4500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:32, skipping insertion in model container [2022-11-03 03:28:32,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:32" (3/3) ... [2022-11-03 03:28:32,843 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-cache.ko-entry_point.cil.out.i [2022-11-03 03:28:32,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:28:32,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:28:32,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:28:32,988 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;@39f5ce3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:28:32,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:28:33,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 3296 states, 1927 states have (on average 1.2802283341982357) internal successors, (2467), 2010 states have internal predecessors, (2467), 1124 states have call successors, (1124), 244 states have call predecessors, (1124), 243 states have return successors, (1118), 1089 states have call predecessors, (1118), 1118 states have call successors, (1118) [2022-11-03 03:28:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-03 03:28:33,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:33,027 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 03:28:33,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash -509605191, now seen corresponding path program 1 times [2022-11-03 03:28:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:33,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284961686] [2022-11-03 03:28:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-03 03:28:34,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:34,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284961686] [2022-11-03 03:28:34,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284961686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:34,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:34,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:34,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904686373] [2022-11-03 03:28:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:34,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:34,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:34,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:34,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:34,236 INFO L87 Difference]: Start difference. First operand has 3296 states, 1927 states have (on average 1.2802283341982357) internal successors, (2467), 2010 states have internal predecessors, (2467), 1124 states have call successors, (1124), 244 states have call predecessors, (1124), 243 states have return successors, (1118), 1089 states have call predecessors, (1118), 1118 states have call successors, (1118) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:28:36,296 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 03:28:39,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:28:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:43,905 INFO L93 Difference]: Finished difference Result 9523 states and 13741 transitions. [2022-11-03 03:28:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:43,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 196 [2022-11-03 03:28:43,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:43,991 INFO L225 Difference]: With dead ends: 9523 [2022-11-03 03:28:43,991 INFO L226 Difference]: Without dead ends: 6230 [2022-11-03 03:28:44,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:44,034 INFO L413 NwaCegarLoop]: 5306 mSDtfsCounter, 4208 mSDsluCounter, 4681 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 9606 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:44,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4208 Valid, 9606 Invalid, 787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 782 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 03:28:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2022-11-03 03:28:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6226. [2022-11-03 03:28:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6226 states, 3655 states have (on average 1.2735978112175104) internal successors, (4655), 3803 states have internal predecessors, (4655), 2096 states have call successors, (2096), 475 states have call predecessors, (2096), 474 states have return successors, (2094), 2036 states have call predecessors, (2094), 2094 states have call successors, (2094) [2022-11-03 03:28:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 8845 transitions. [2022-11-03 03:28:44,594 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 8845 transitions. Word has length 196 [2022-11-03 03:28:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:44,599 INFO L495 AbstractCegarLoop]: Abstraction has 6226 states and 8845 transitions. [2022-11-03 03:28:44,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:28:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 8845 transitions. [2022-11-03 03:28:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-03 03:28:44,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:44,619 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 03:28:44,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:28:44,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:44,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1569033036, now seen corresponding path program 1 times [2022-11-03 03:28:44,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:44,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786302646] [2022-11-03 03:28:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-03 03:28:45,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:45,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786302646] [2022-11-03 03:28:45,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786302646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:45,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:45,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:28:45,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897763471] [2022-11-03 03:28:45,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:45,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:45,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:45,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:45,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:45,297 INFO L87 Difference]: Start difference. First operand 6226 states and 8845 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:28:47,335 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 03:28:52,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:28:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:53,829 INFO L93 Difference]: Finished difference Result 18602 states and 26593 transitions. [2022-11-03 03:28:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 196 [2022-11-03 03:28:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:53,924 INFO L225 Difference]: With dead ends: 18602 [2022-11-03 03:28:53,924 INFO L226 Difference]: Without dead ends: 12405 [2022-11-03 03:28:53,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:53,973 INFO L413 NwaCegarLoop]: 5731 mSDtfsCounter, 4618 mSDsluCounter, 4620 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4618 SdHoareTripleChecker+Valid, 9969 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:53,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4618 Valid, 9969 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 816 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 03:28:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12405 states. [2022-11-03 03:28:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12405 to 12401. [2022-11-03 03:28:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12401 states, 7282 states have (on average 1.273963196923922) internal successors, (9277), 7577 states have internal predecessors, (9277), 4171 states have call successors, (4171), 948 states have call predecessors, (4171), 947 states have return successors, (4171), 4053 states have call predecessors, (4171), 4169 states have call successors, (4171) [2022-11-03 03:28:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12401 states to 12401 states and 17619 transitions. [2022-11-03 03:28:54,665 INFO L78 Accepts]: Start accepts. Automaton has 12401 states and 17619 transitions. Word has length 196 [2022-11-03 03:28:54,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:54,670 INFO L495 AbstractCegarLoop]: Abstraction has 12401 states and 17619 transitions. [2022-11-03 03:28:54,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:28:54,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12401 states and 17619 transitions. [2022-11-03 03:28:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 03:28:54,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:54,684 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:28:54,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:28:54,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2041594791, now seen corresponding path program 1 times [2022-11-03 03:28:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:54,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077740591] [2022-11-03 03:28:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:54,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-03 03:28:55,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:55,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077740591] [2022-11-03 03:28:55,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077740591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:55,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003142228] [2022-11-03 03:28:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:55,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:55,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:55,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:55,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:28:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:57,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 4046 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:28:57,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-11-03 03:28:57,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:28:57,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003142228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:57,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:28:57,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 03:28:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444630488] [2022-11-03 03:28:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:57,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:57,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:57,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:28:57,218 INFO L87 Difference]: Start difference. First operand 12401 states and 17619 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:28:59,255 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 03:29:02,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:06,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:07,883 INFO L93 Difference]: Finished difference Result 34228 states and 48422 transitions. [2022-11-03 03:29:07,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:29:07,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 261 [2022-11-03 03:29:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:08,027 INFO L225 Difference]: With dead ends: 34228 [2022-11-03 03:29:08,027 INFO L226 Difference]: Without dead ends: 21862 [2022-11-03 03:29:08,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:29:08,101 INFO L413 NwaCegarLoop]: 5562 mSDtfsCounter, 3283 mSDsluCounter, 4543 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 9725 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:08,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3283 Valid, 9725 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1024 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 03:29:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21862 states. [2022-11-03 03:29:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21862 to 21849. [2022-11-03 03:29:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21849 states, 12776 states have (on average 1.2608797745773326) internal successors, (16109), 13353 states have internal predecessors, (16109), 7283 states have call successors, (7283), 1790 states have call predecessors, (7283), 1789 states have return successors, (7283), 7051 states have call predecessors, (7283), 7281 states have call successors, (7283) [2022-11-03 03:29:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21849 states to 21849 states and 30675 transitions. [2022-11-03 03:29:09,591 INFO L78 Accepts]: Start accepts. Automaton has 21849 states and 30675 transitions. Word has length 261 [2022-11-03 03:29:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:09,593 INFO L495 AbstractCegarLoop]: Abstraction has 21849 states and 30675 transitions. [2022-11-03 03:29:09,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:29:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21849 states and 30675 transitions. [2022-11-03 03:29:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-03 03:29:09,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:09,605 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:29:09,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:29:09,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-03 03:29:09,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:09,831 INFO L85 PathProgramCache]: Analyzing trace with hash 858610206, now seen corresponding path program 1 times [2022-11-03 03:29:09,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:09,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860372045] [2022-11-03 03:29:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:09,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-11-03 03:29:10,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:10,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860372045] [2022-11-03 03:29:10,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860372045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:29:10,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250531637] [2022-11-03 03:29:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:10,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:10,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:10,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:29:10,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:29:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:12,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 3715 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:29:12,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:29:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-03 03:29:12,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:29:12,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250531637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:12,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:29:12,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-03 03:29:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196041329] [2022-11-03 03:29:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:12,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:12,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:12,867 INFO L87 Difference]: Start difference. First operand 21849 states and 30675 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 03:29:14,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:18,478 WARN L539 Checker$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 03:29:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:22,921 INFO L93 Difference]: Finished difference Result 43879 states and 62232 transitions. [2022-11-03 03:29:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:29:22,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 260 [2022-11-03 03:29:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:23,047 INFO L225 Difference]: With dead ends: 43879 [2022-11-03 03:29:23,048 INFO L226 Difference]: Without dead ends: 22065 [2022-11-03 03:29:23,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:29:23,167 INFO L413 NwaCegarLoop]: 4284 mSDtfsCounter, 20 mSDsluCounter, 13973 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17105 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:23,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17105 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1604 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 03:29:23,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22065 states. [2022-11-03 03:29:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22065 to 22065. [2022-11-03 03:29:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22065 states, 12920 states have (on average 1.2585913312693497) internal successors, (16261), 13497 states have internal predecessors, (16261), 7339 states have call successors, (7339), 1806 states have call predecessors, (7339), 1805 states have return successors, (7339), 7107 states have call predecessors, (7339), 7337 states have call successors, (7339) [2022-11-03 03:29:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22065 states to 22065 states and 30939 transitions. [2022-11-03 03:29:24,597 INFO L78 Accepts]: Start accepts. Automaton has 22065 states and 30939 transitions. Word has length 260 [2022-11-03 03:29:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:24,601 INFO L495 AbstractCegarLoop]: Abstraction has 22065 states and 30939 transitions. [2022-11-03 03:29:24,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 03:29:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 22065 states and 30939 transitions. [2022-11-03 03:29:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 03:29:24,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:24,623 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:29:24,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:29:24,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:24,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:24,839 INFO L85 PathProgramCache]: Analyzing trace with hash 130593630, now seen corresponding path program 1 times [2022-11-03 03:29:24,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:24,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125314334] [2022-11-03 03:29:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:24,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-03 03:29:25,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:25,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125314334] [2022-11-03 03:29:25,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125314334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:25,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:25,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548400102] [2022-11-03 03:29:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:25,418 INFO L87 Difference]: Start difference. First operand 22065 states and 30939 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 03:29:28,368 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 03:29:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:33,155 INFO L93 Difference]: Finished difference Result 54512 states and 76432 transitions. [2022-11-03 03:29:33,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:29:33,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 298 [2022-11-03 03:29:33,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:33,372 INFO L225 Difference]: With dead ends: 54512 [2022-11-03 03:29:33,372 INFO L226 Difference]: Without dead ends: 32482 [2022-11-03 03:29:33,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:33,700 INFO L413 NwaCegarLoop]: 6917 mSDtfsCounter, 4240 mSDsluCounter, 3916 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4240 SdHoareTripleChecker+Valid, 10507 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:33,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4240 Valid, 10507 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1084 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-03 03:29:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32482 states. [2022-11-03 03:29:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32482 to 32469. [2022-11-03 03:29:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32469 states, 19014 states have (on average 1.2543915009992637) internal successors, (23851), 19881 states have internal predecessors, (23851), 10755 states have call successors, (10755), 2700 states have call predecessors, (10755), 2699 states have return successors, (10755), 10409 states have call predecessors, (10755), 10753 states have call successors, (10755) [2022-11-03 03:29:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32469 states to 32469 states and 45361 transitions. [2022-11-03 03:29:35,719 INFO L78 Accepts]: Start accepts. Automaton has 32469 states and 45361 transitions. Word has length 298 [2022-11-03 03:29:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:35,720 INFO L495 AbstractCegarLoop]: Abstraction has 32469 states and 45361 transitions. [2022-11-03 03:29:35,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 03:29:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 32469 states and 45361 transitions. [2022-11-03 03:29:35,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-11-03 03:29:35,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:35,735 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:29:35,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:29:35,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash -796466669, now seen corresponding path program 1 times [2022-11-03 03:29:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:35,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810062107] [2022-11-03 03:29:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:35,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2022-11-03 03:29:37,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:37,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810062107] [2022-11-03 03:29:37,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810062107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:29:37,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113805880] [2022-11-03 03:29:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:37,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:37,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:37,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:29:37,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:29:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:38,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 3978 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:29:38,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:29:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2022-11-03 03:29:38,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:29:38,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113805880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:38,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:29:38,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-03 03:29:38,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130910064] [2022-11-03 03:29:38,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:38,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:38,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:38,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:38,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:38,838 INFO L87 Difference]: Start difference. First operand 32469 states and 45361 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 03:29:40,871 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 03:29:44,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:45,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:51,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:51,287 INFO L93 Difference]: Finished difference Result 65275 states and 92192 transitions. [2022-11-03 03:29:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:29:51,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 288 [2022-11-03 03:29:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:51,462 INFO L225 Difference]: With dead ends: 65275 [2022-11-03 03:29:51,462 INFO L226 Difference]: Without dead ends: 32841 [2022-11-03 03:29:51,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:29:51,642 INFO L413 NwaCegarLoop]: 4297 mSDtfsCounter, 22 mSDsluCounter, 14003 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17147 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:51,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17147 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1624 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 03:29:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32841 states. [2022-11-03 03:29:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32841 to 32829. [2022-11-03 03:29:53,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32829 states, 19254 states have (on average 1.2530902669575152) internal successors, (24127), 20121 states have internal predecessors, (24127), 10851 states have call successors, (10851), 2724 states have call predecessors, (10851), 2723 states have return successors, (10887), 10505 states have call predecessors, (10887), 10849 states have call successors, (10887) [2022-11-03 03:29:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32829 states to 32829 states and 45865 transitions. [2022-11-03 03:29:53,606 INFO L78 Accepts]: Start accepts. Automaton has 32829 states and 45865 transitions. Word has length 288 [2022-11-03 03:29:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:53,607 INFO L495 AbstractCegarLoop]: Abstraction has 32829 states and 45865 transitions. [2022-11-03 03:29:53,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 03:29:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 32829 states and 45865 transitions. [2022-11-03 03:29:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-03 03:29:53,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:53,637 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 3, 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] [2022-11-03 03:29:53,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 03:29:53,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:53,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1333515416, now seen corresponding path program 1 times [2022-11-03 03:29:53,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:53,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418809787] [2022-11-03 03:29:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:53,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-03 03:29:56,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:56,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418809787] [2022-11-03 03:29:56,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418809787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:29:56,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18339578] [2022-11-03 03:29:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:56,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:56,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:29:57,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:29:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:58,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 4435 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:29:58,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:29:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2022-11-03 03:29:58,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:29:58,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18339578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:58,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:29:58,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-03 03:29:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954022523] [2022-11-03 03:29:58,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:58,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:29:58,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:58,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:29:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:29:58,910 INFO L87 Difference]: Start difference. First operand 32829 states and 45865 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 03:30:00,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:05,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:12,275 INFO L93 Difference]: Finished difference Result 84817 states and 118466 transitions. [2022-11-03 03:30:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:12,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 324 [2022-11-03 03:30:12,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:12,782 INFO L225 Difference]: With dead ends: 84817 [2022-11-03 03:30:12,783 INFO L226 Difference]: Without dead ends: 51990 [2022-11-03 03:30:12,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:30:12,994 INFO L413 NwaCegarLoop]: 7828 mSDtfsCounter, 4608 mSDsluCounter, 13180 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 19935 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:12,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 19935 Invalid, 1781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1775 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-11-03 03:30:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51990 states. [2022-11-03 03:30:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51990 to 49522. [2022-11-03 03:30:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49522 states, 29029 states have (on average 1.2533328740225291) internal successors, (36383), 30333 states have internal predecessors, (36383), 16390 states have call successors, (16390), 4103 states have call predecessors, (16390), 4102 states have return successors, (16446), 15869 states have call predecessors, (16446), 16388 states have call successors, (16446) [2022-11-03 03:30:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49522 states to 49522 states and 69219 transitions. [2022-11-03 03:30:15,911 INFO L78 Accepts]: Start accepts. Automaton has 49522 states and 69219 transitions. Word has length 324 [2022-11-03 03:30:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:15,912 INFO L495 AbstractCegarLoop]: Abstraction has 49522 states and 69219 transitions. [2022-11-03 03:30:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 03:30:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 49522 states and 69219 transitions. [2022-11-03 03:30:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-11-03 03:30:15,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:15,940 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 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] [2022-11-03 03:30:15,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:16,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:30:16,163 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:16,164 INFO L85 PathProgramCache]: Analyzing trace with hash -568405540, now seen corresponding path program 1 times [2022-11-03 03:30:16,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:16,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427599130] [2022-11-03 03:30:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:16,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2022-11-03 03:30:19,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:19,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427599130] [2022-11-03 03:30:19,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427599130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:30:19,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502991532] [2022-11-03 03:30:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:19,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:30:19,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:19,314 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:30:19,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:30:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:21,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 4495 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 03:30:21,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:21,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 03:30:21,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 03:30:21,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:30:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2022-11-03 03:30:21,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:30:21,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-03 03:30:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2022-11-03 03:30:21,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502991532] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:30:21,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [873916816] [2022-11-03 03:30:21,887 INFO L159 IcfgInterpreter]: Started Sifa with 163 locations of interest [2022-11-03 03:30:21,887 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:30:21,892 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 03:30:21,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:30:21,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-03 03:30:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492998853] [2022-11-03 03:30:21,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:30:21,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:30:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:30:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:30:21,898 INFO L87 Difference]: Start difference. First operand 49522 states and 69219 transitions. Second operand has 15 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 9 states have call successors, (47), 6 states have call predecessors, (47), 2 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) [2022-11-03 03:30:23,930 WARN L539 Checker$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 03:30:32,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:34,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:36,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:38,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:39,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:41,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:43,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:45,558 WARN L539 Checker$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 03:30:47,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:49,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:04,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:06,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:08,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:10,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:16,266 INFO L93 Difference]: Finished difference Result 100197 states and 141970 transitions. [2022-11-03 03:31:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:31:16,273 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 9 states have call successors, (47), 6 states have call predecessors, (47), 2 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) Word has length 331 [2022-11-03 03:31:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:16,620 INFO L225 Difference]: With dead ends: 100197 [2022-11-03 03:31:16,620 INFO L226 Difference]: Without dead ends: 50710 [2022-11-03 03:31:17,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:31:17,281 INFO L413 NwaCegarLoop]: 4294 mSDtfsCounter, 242 mSDsluCounter, 29980 mSDsCounter, 0 mSdLazyCounter, 5657 mSolverCounterSat, 134 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 32178 SdHoareTripleChecker+Invalid, 5794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 5657 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:17,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 32178 Invalid, 5794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 5657 Invalid, 3 Unknown, 0 Unchecked, 52.0s Time] [2022-11-03 03:31:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50710 states. [2022-11-03 03:31:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50710 to 50404. [2022-11-03 03:31:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50404 states, 29587 states have (on average 1.2576807381620305) internal successors, (37211), 30981 states have internal predecessors, (37211), 16660 states have call successors, (16660), 4139 states have call predecessors, (16660), 4156 states have return successors, (16860), 16121 states have call predecessors, (16860), 16658 states have call successors, (16860) [2022-11-03 03:31:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50404 states to 50404 states and 70731 transitions. [2022-11-03 03:31:20,301 INFO L78 Accepts]: Start accepts. Automaton has 50404 states and 70731 transitions. Word has length 331 [2022-11-03 03:31:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:20,302 INFO L495 AbstractCegarLoop]: Abstraction has 50404 states and 70731 transitions. [2022-11-03 03:31:20,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 9 states have (on average 12.444444444444445) internal successors, (112), 11 states have internal predecessors, (112), 9 states have call successors, (47), 6 states have call predecessors, (47), 2 states have return successors, (37), 3 states have call predecessors, (37), 4 states have call successors, (37) [2022-11-03 03:31:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 50404 states and 70731 transitions. [2022-11-03 03:31:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-03 03:31:20,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:20,347 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 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] [2022-11-03 03:31:20,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:20,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:20,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash -655250205, now seen corresponding path program 1 times [2022-11-03 03:31:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:20,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150168138] [2022-11-03 03:31:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-03 03:31:22,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:22,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150168138] [2022-11-03 03:31:22,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150168138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:31:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879182721] [2022-11-03 03:31:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:22,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:22,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:22,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:31:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:24,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 4339 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:31:24,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2022-11-03 03:31:24,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:24,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879182721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:24,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:31:24,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-03 03:31:24,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201525372] [2022-11-03 03:31:24,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:24,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:31:24,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:24,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:31:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:31:24,209 INFO L87 Difference]: Start difference. First operand 50404 states and 70731 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 03:31:26,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:30,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:32,672 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 03:31:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:41,072 INFO L93 Difference]: Finished difference Result 116443 states and 163382 transitions. [2022-11-03 03:31:41,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:31:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 326 [2022-11-03 03:31:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:41,417 INFO L225 Difference]: With dead ends: 116443 [2022-11-03 03:31:41,417 INFO L226 Difference]: Without dead ends: 66074 [2022-11-03 03:31:41,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:31:41,832 INFO L413 NwaCegarLoop]: 6876 mSDtfsCounter, 4433 mSDsluCounter, 6087 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 53 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 12270 SdHoareTripleChecker+Invalid, 3683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:41,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4460 Valid, 12270 Invalid, 3683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 3628 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2022-11-03 03:31:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66074 states. [2022-11-03 03:31:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66074 to 65038. [2022-11-03 03:31:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65038 states, 38063 states have (on average 1.2558652759898064) internal successors, (47802), 39911 states have internal predecessors, (47802), 21510 states have call successors, (21510), 5441 states have call predecessors, (21510), 5464 states have return successors, (21776), 20793 states have call predecessors, (21776), 21508 states have call successors, (21776) [2022-11-03 03:31:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65038 states to 65038 states and 91088 transitions. [2022-11-03 03:31:45,188 INFO L78 Accepts]: Start accepts. Automaton has 65038 states and 91088 transitions. Word has length 326 [2022-11-03 03:31:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:45,189 INFO L495 AbstractCegarLoop]: Abstraction has 65038 states and 91088 transitions. [2022-11-03 03:31:45,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 03:31:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 65038 states and 91088 transitions. [2022-11-03 03:31:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-03 03:31:45,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:45,224 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 4, 4, 4, 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] [2022-11-03 03:31:45,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:45,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 03:31:45,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:45,440 INFO L85 PathProgramCache]: Analyzing trace with hash -471514307, now seen corresponding path program 1 times [2022-11-03 03:31:45,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:45,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586057927] [2022-11-03 03:31:45,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:45,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:45,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:31:45,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108356543] [2022-11-03 03:31:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:45,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:45,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:45,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:45,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:31:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:47,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 4572 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:31:47,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2022-11-03 03:31:47,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:47,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586057927] [2022-11-03 03:31:47,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:31:47,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108356543] [2022-11-03 03:31:47,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108356543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:47,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:47,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:31:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265133610] [2022-11-03 03:31:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:31:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:31:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:31:47,763 INFO L87 Difference]: Start difference. First operand 65038 states and 91088 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:31:49,801 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 03:31:53,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:58,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:03,088 INFO L93 Difference]: Finished difference Result 135403 states and 190361 transitions. [2022-11-03 03:32:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:32:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 332 [2022-11-03 03:32:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:03,590 INFO L225 Difference]: With dead ends: 135403 [2022-11-03 03:32:03,591 INFO L226 Difference]: Without dead ends: 70400 [2022-11-03 03:32:03,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:32:03,868 INFO L413 NwaCegarLoop]: 4827 mSDtfsCounter, 1579 mSDsluCounter, 19450 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 401 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 22721 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:03,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 22721 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2009 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2022-11-03 03:32:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70400 states. [2022-11-03 03:32:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70400 to 65062. [2022-11-03 03:32:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65062 states, 38087 states have (on average 1.2557040459999476) internal successors, (47826), 39935 states have internal predecessors, (47826), 21510 states have call successors, (21510), 5441 states have call predecessors, (21510), 5464 states have return successors, (21776), 20793 states have call predecessors, (21776), 21508 states have call successors, (21776) [2022-11-03 03:32:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65062 states to 65062 states and 91112 transitions. [2022-11-03 03:32:07,304 INFO L78 Accepts]: Start accepts. Automaton has 65062 states and 91112 transitions. Word has length 332 [2022-11-03 03:32:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:07,305 INFO L495 AbstractCegarLoop]: Abstraction has 65062 states and 91112 transitions. [2022-11-03 03:32:07,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:32:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 65062 states and 91112 transitions. [2022-11-03 03:32:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-03 03:32:07,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:07,329 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 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, 1] [2022-11-03 03:32:07,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:07,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:07,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash -96259964, now seen corresponding path program 1 times [2022-11-03 03:32:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:07,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341565769] [2022-11-03 03:32:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-03 03:32:09,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:09,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341565769] [2022-11-03 03:32:09,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341565769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:32:09,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060866691] [2022-11-03 03:32:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:09,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:09,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:09,332 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:09,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:32:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:11,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 4538 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:32:11,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2022-11-03 03:32:11,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:32:11,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060866691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:11,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:32:11,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-11-03 03:32:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672659249] [2022-11-03 03:32:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:11,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:32:11,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:11,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:32:11,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:32:11,442 INFO L87 Difference]: Start difference. First operand 65062 states and 91112 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-03 03:32:13,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:16,253 WARN L539 Checker$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 03:32:28,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:29,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:31,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:46,145 INFO L93 Difference]: Finished difference Result 145945 states and 204384 transitions. [2022-11-03 03:32:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:32:46,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 345 [2022-11-03 03:32:46,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:46,599 INFO L225 Difference]: With dead ends: 145945 [2022-11-03 03:32:46,599 INFO L226 Difference]: Without dead ends: 80918 [2022-11-03 03:32:47,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:32:47,058 INFO L413 NwaCegarLoop]: 6827 mSDtfsCounter, 5155 mSDsluCounter, 26399 mSDsCounter, 0 mSdLazyCounter, 14851 mSolverCounterSat, 276 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5180 SdHoareTripleChecker+Valid, 30283 SdHoareTripleChecker+Invalid, 15130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 14851 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:47,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5180 Valid, 30283 Invalid, 15130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [276 Valid, 14851 Invalid, 3 Unknown, 0 Unchecked, 31.3s Time] [2022-11-03 03:32:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80918 states. [2022-11-03 03:32:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80918 to 79780. [2022-11-03 03:32:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79780 states, 46623 states have (on average 1.25463826866568) internal successors, (58495), 48925 states have internal predecessors, (58495), 26384 states have call successors, (26384), 6743 states have call predecessors, (26384), 6772 states have return successors, (26716), 25489 states have call predecessors, (26716), 26382 states have call successors, (26716) [2022-11-03 03:32:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79780 states to 79780 states and 111595 transitions. [2022-11-03 03:32:50,900 INFO L78 Accepts]: Start accepts. Automaton has 79780 states and 111595 transitions. Word has length 345 [2022-11-03 03:32:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:50,901 INFO L495 AbstractCegarLoop]: Abstraction has 79780 states and 111595 transitions. [2022-11-03 03:32:50,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2022-11-03 03:32:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 79780 states and 111595 transitions. [2022-11-03 03:32:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-11-03 03:32:50,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:50,918 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:32:50,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:51,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 03:32:51,119 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1263828462, now seen corresponding path program 1 times [2022-11-03 03:32:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:51,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199550225] [2022-11-03 03:32:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:51,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2022-11-03 03:32:51,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:51,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199550225] [2022-11-03 03:32:51,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199550225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:32:51,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717355674] [2022-11-03 03:32:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:51,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:51,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:51,729 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:51,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c27b8a4-9aa8-47d5-ab82-fc3e53e9bfa7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:32:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:53,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 4634 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:32:53,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2022-11-03 03:32:53,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:32:53,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717355674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:53,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:32:53,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-03 03:32:53,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319098787] [2022-11-03 03:32:53,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:53,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:32:53,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:53,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:32:53,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:32:53,799 INFO L87 Difference]: Start difference. First operand 79780 states and 111595 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (55), 4 states have call predecessors, (55), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-03 03:32:55,836 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 03:32:58,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:06,588 INFO L93 Difference]: Finished difference Result 160665 states and 227676 transitions. [2022-11-03 03:33:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:33:06,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (55), 4 states have call predecessors, (55), 2 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 349 [2022-11-03 03:33:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:07,061 INFO L225 Difference]: With dead ends: 160665 [2022-11-03 03:33:07,062 INFO L226 Difference]: Without dead ends: 80920