./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--block--loop.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0 --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 b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf --- 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-e04fb08 [2022-11-16 15:53:02,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:53:02,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:53:02,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:53:02,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:53:02,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:53:02,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:53:02,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:53:02,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:53:02,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:53:02,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:53:02,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:53:02,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:53:02,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:53:02,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:53:02,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:53:02,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:53:02,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:53:02,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:53:02,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:53:02,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:53:02,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:53:02,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:53:02,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:53:02,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:53:02,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:53:02,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:53:02,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:53:02,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:53:02,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:53:02,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:53:02,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:53:02,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:53:02,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:53:02,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:53:02,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:53:02,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:53:02,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:53:02,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:53:02,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:53:02,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:53:02,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 15:53:02,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:53:02,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:53:02,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:53:02,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:53:02,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:53:02,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:53:02,474 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:53:02,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:53:02,475 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:53:02,475 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:53:02,475 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:53:02,475 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:53:02,476 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:53:02,476 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:53:02,476 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:53:02,476 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:53:02,476 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:53:02,476 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:53:02,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:53:02,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:53:02,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:53:02,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:53:02,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:53:02,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:53:02,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:53:02,478 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:53:02,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:53:02,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:53:02,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:53:02,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:53:02,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:53:02,480 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:53:02,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:53:02,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:53:02,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:53:02,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:53:02,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:53:02,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:53:02,481 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_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf [2022-11-16 15:53:02,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:53:02,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:53:02,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:53:02,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:53:02,813 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:53:02,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-16 15:53:02,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/data/21ee34797/bc792babf06949faab1c430a04e15ba0/FLAG94f644d18 [2022-11-16 15:53:03,715 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:53:03,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-16 15:53:03,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/data/21ee34797/bc792babf06949faab1c430a04e15ba0/FLAG94f644d18 [2022-11-16 15:53:04,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/data/21ee34797/bc792babf06949faab1c430a04e15ba0 [2022-11-16 15:53:04,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:53:04,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:53:04,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:53:04,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:53:04,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:53:04,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:04" (1/1) ... [2022-11-16 15:53:04,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734f1468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:04, skipping insertion in model container [2022-11-16 15:53:04,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:04" (1/1) ... [2022-11-16 15:53:04,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:53:04,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:53:06,711 WARN L229 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_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-16 15:53:06,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:53:06,825 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:53:07,271 WARN L229 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_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2022-11-16 15:53:07,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:53:07,422 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:53:07,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07 WrapperNode [2022-11-16 15:53:07,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:53:07,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:53:07,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:53:07,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:53:07,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:07,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:07,738 INFO L138 Inliner]: procedures = 311, calls = 2050, calls flagged for inlining = 159, calls inlined = 157, statements flattened = 5625 [2022-11-16 15:53:07,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:53:07,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:53:07,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:53:07,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:53:07,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:07,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:07,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:07,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:07,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:07,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:08,008 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:08,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:08,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:53:08,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:53:08,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:53:08,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:53:08,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (1/1) ... [2022-11-16 15:53:08,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:53:08,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:08,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:53:08,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:53:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2022-11-16 15:53:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2022-11-16 15:53:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure loop_add [2022-11-16 15:53:08,146 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_add [2022-11-16 15:53:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 15:53:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 15:53:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 15:53:08,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 15:53:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure iov_iter_bvec [2022-11-16 15:53:08,147 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_iter_bvec [2022-11-16 15:53:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 15:53:08,147 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 15:53:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-16 15:53:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-16 15:53:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure loop_control_ioctl [2022-11-16 15:53:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_control_ioctl [2022-11-16 15:53:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-16 15:53:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-16 15:53:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-16 15:53:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-16 15:53:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 15:53:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 15:53:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2022-11-16 15:53:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2022-11-16 15:53:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-16 15:53:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-16 15:53:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure loop_remove [2022-11-16 15:53:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_remove [2022-11-16 15:53:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_xor [2022-11-16 15:53:08,151 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_xor [2022-11-16 15:53:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 15:53:08,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 15:53:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 15:53:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 15:53:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure huge_encode_dev [2022-11-16 15:53:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure huge_encode_dev [2022-11-16 15:53:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure lo_do_transfer [2022-11-16 15:53:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_do_transfer [2022-11-16 15:53:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_unfreeze_queue [2022-11-16 15:53:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_unfreeze_queue [2022-11-16 15:53:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-16 15:53:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-16 15:53:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure lo_compat_ioctl [2022-11-16 15:53:08,154 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_compat_ioctl [2022-11-16 15:53:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-16 15:53:08,154 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-16 15:53:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-16 15:53:08,155 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-16 15:53:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 15:53:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 15:53:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 15:53:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 15:53:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-16 15:53:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-16 15:53:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure loop_get_status [2022-11-16 15:53:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_get_status [2022-11-16 15:53:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure loop_handle_cmd [2022-11-16 15:53:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_handle_cmd [2022-11-16 15:53:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure loop_clr_fd [2022-11-16 15:53:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_clr_fd [2022-11-16 15:53:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 15:53:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-16 15:53:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-16 15:53:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure figure_loop_size [2022-11-16 15:53:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure figure_loop_size [2022-11-16 15:53:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure get_size [2022-11-16 15:53:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure get_size [2022-11-16 15:53:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-16 15:53:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-16 15:53:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-16 15:53:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-16 15:53:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 15:53:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-16 15:53:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_2 [2022-11-16 15:53:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_2 [2022-11-16 15:53:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-16 15:53:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-16 15:53:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure lo_write_bvec [2022-11-16 15:53:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_write_bvec [2022-11-16 15:53:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 15:53:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 15:53:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-16 15:53:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-16 15:53:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-16 15:53:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-16 15:53:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-16 15:53:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-16 15:53:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status_old [2022-11-16 15:53:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status_old [2022-11-16 15:53:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-16 15:53:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-16 15:53:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-16 15:53:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-16 15:53:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-16 15:53:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-16 15:53:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure loop_reread_partitions [2022-11-16 15:53:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_reread_partitions [2022-11-16 15:53:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure nonseekable_open [2022-11-16 15:53:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_capacity [2022-11-16 15:53:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_capacity [2022-11-16 15:53:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure vfs_iter_read [2022-11-16 15:53:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure vfs_iter_read [2022-11-16 15:53:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure idr_for_each [2022-11-16 15:53:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_for_each [2022-11-16 15:53:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 15:53:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-16 15:53:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-16 15:53:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure ___might_sleep [2022-11-16 15:53:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ___might_sleep [2022-11-16 15:53:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-11-16 15:53:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-11-16 15:53:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-16 15:53:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-16 15:53:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 15:53:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure bio_advance_iter [2022-11-16 15:53:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_advance_iter [2022-11-16 15:53:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_write_work [2022-11-16 15:53:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_write_work [2022-11-16 15:53:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure bd_set_size [2022-11-16 15:53:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_set_size [2022-11-16 15:53:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 15:53:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2022-11-16 15:53:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2022-11-16 15:53:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_set_gfp_mask [2022-11-16 15:53:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_set_gfp_mask [2022-11-16 15:53:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure xor_init [2022-11-16 15:53:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure xor_init [2022-11-16 15:53:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status64 [2022-11-16 15:53:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status64 [2022-11-16 15:53:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 15:53:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 15:53:08,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_11 [2022-11-16 15:53:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_11 [2022-11-16 15:53:08,169 INFO L130 BoogieDeclarations]: Found specification of procedure zero_fill_bio [2022-11-16 15:53:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_fill_bio [2022-11-16 15:53:08,169 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 15:53:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 15:53:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure loop_attr_show [2022-11-16 15:53:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_attr_show [2022-11-16 15:53:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 15:53:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-16 15:53:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-16 15:53:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 15:53:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 15:53:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-16 15:53:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-16 15:53:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-16 15:53:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-16 15:53:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_freeze_queue [2022-11-16 15:53:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_freeze_queue [2022-11-16 15:53:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-16 15:53:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-16 15:53:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 15:53:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-16 15:53:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-16 15:53:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-16 15:53:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-16 15:53:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:53:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure get_loop_size [2022-11-16 15:53:08,173 INFO L138 BoogieDeclarations]: Found implementation of procedure get_loop_size [2022-11-16 15:53:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 15:53:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-16 15:53:08,173 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-16 15:53:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status [2022-11-16 15:53:08,174 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status [2022-11-16 15:53:08,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 15:53:08,174 INFO L130 BoogieDeclarations]: Found specification of procedure lo_ioctl [2022-11-16 15:53:08,174 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_ioctl [2022-11-16 15:53:08,174 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-16 15:53:08,174 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-16 15:53:08,174 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-16 15:53:08,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-16 15:53:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-11-16 15:53:08,175 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-11-16 15:53:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure loop_release_xfer [2022-11-16 15:53:08,175 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_release_xfer [2022-11-16 15:53:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2022-11-16 15:53:08,175 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2022-11-16 15:53:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-16 15:53:08,176 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-16 15:53:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_2 [2022-11-16 15:53:08,176 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_2 [2022-11-16 15:53:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure loop_switch [2022-11-16 15:53:08,176 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_switch [2022-11-16 15:53:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_read_work [2022-11-16 15:53:08,176 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_read_work [2022-11-16 15:53:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2022-11-16 15:53:08,177 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2022-11-16 15:53:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-16 15:53:08,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-16 15:53:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_gfp_mask [2022-11-16 15:53:08,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_gfp_mask [2022-11-16 15:53:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-16 15:53:08,177 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-16 15:53:08,178 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 15:53:08,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 15:53:08,178 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2022-11-16 15:53:08,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2022-11-16 15:53:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:53:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-16 15:53:08,179 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-16 15:53:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:53:08,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:53:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure loop_lookup [2022-11-16 15:53:08,180 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_lookup [2022-11-16 15:53:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_rq [2022-11-16 15:53:08,180 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_rq [2022-11-16 15:53:09,078 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:53:09,081 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:53:09,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 15:53:20,487 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:53:22,014 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:53:22,014 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 15:53:22,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:53:22 BoogieIcfgContainer [2022-11-16 15:53:22,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:53:22,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:53:22,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:53:22,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:53:22,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:53:04" (1/3) ... [2022-11-16 15:53:22,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3ea149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:22, skipping insertion in model container [2022-11-16 15:53:22,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:07" (2/3) ... [2022-11-16 15:53:22,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3ea149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:22, skipping insertion in model container [2022-11-16 15:53:22,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:53:22" (3/3) ... [2022-11-16 15:53:22,034 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2022-11-16 15:53:22,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:53:22,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:53:22,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:53:22,193 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;@429b6d9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:53:22,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:53:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 1252 states, 794 states have (on average 1.3614609571788414) internal successors, (1081), 829 states have internal predecessors, (1081), 363 states have call successors, (363), 94 states have call predecessors, (363), 93 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2022-11-16 15:53:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-11-16 15:53:22,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:22,262 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:22,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:22,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:22,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1238552839, now seen corresponding path program 1 times [2022-11-16 15:53:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:22,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706468898] [2022-11-16 15:53:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:22,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4531 trivial. 0 not checked. [2022-11-16 15:53:24,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:24,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706468898] [2022-11-16 15:53:24,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706468898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:24,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:24,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:53:24,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274052794] [2022-11-16 15:53:24,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:24,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:53:24,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:24,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:53:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:53:24,065 INFO L87 Difference]: Start difference. First operand has 1252 states, 794 states have (on average 1.3614609571788414) internal successors, (1081), 829 states have internal predecessors, (1081), 363 states have call successors, (363), 94 states have call predecessors, (363), 93 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) 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, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-16 15:53:25,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:53:32,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:53:33,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:53:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:33,664 INFO L93 Difference]: Finished difference Result 3522 states and 5078 transitions. [2022-11-16 15:53:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:53:33,667 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, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 522 [2022-11-16 15:53:33,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:33,715 INFO L225 Difference]: With dead ends: 3522 [2022-11-16 15:53:33,716 INFO L226 Difference]: Without dead ends: 2339 [2022-11-16 15:53:33,728 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 [2022-11-16 15:53:33,731 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 1610 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:33,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 3440 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 407 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-16 15:53:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2022-11-16 15:53:33,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2336. [2022-11-16 15:53:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1512 states have (on average 1.3531746031746033) internal successors, (2046), 1551 states have internal predecessors, (2046), 640 states have call successors, (640), 184 states have call predecessors, (640), 183 states have return successors, (638), 634 states have call predecessors, (638), 638 states have call successors, (638) [2022-11-16 15:53:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3324 transitions. [2022-11-16 15:53:33,961 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3324 transitions. Word has length 522 [2022-11-16 15:53:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:33,970 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 3324 transitions. [2022-11-16 15:53:33,971 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, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-16 15:53:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3324 transitions. [2022-11-16 15:53:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-11-16 15:53:33,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:33,992 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:33,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:53:33,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash 430594767, now seen corresponding path program 1 times [2022-11-16 15:53:33,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:33,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556651373] [2022-11-16 15:53:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4531 trivial. 0 not checked. [2022-11-16 15:53:34,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:34,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556651373] [2022-11-16 15:53:34,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556651373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:34,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:34,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:53:34,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539738031] [2022-11-16 15:53:34,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:34,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:53:34,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:53:34,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:53:34,961 INFO L87 Difference]: Start difference. First operand 2336 states and 3324 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-16 15:53:36,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:53:40,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:53:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:44,188 INFO L93 Difference]: Finished difference Result 5839 states and 8279 transitions. [2022-11-16 15:53:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:53:44,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 539 [2022-11-16 15:53:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:44,214 INFO L225 Difference]: With dead ends: 5839 [2022-11-16 15:53:44,215 INFO L226 Difference]: Without dead ends: 3602 [2022-11-16 15:53:44,226 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 [2022-11-16 15:53:44,227 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 901 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:44,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 3270 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 15:53:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2022-11-16 15:53:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3592. [2022-11-16 15:53:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 2352 states have (on average 1.3630952380952381) internal successors, (3206), 2404 states have internal predecessors, (3206), 943 states have call successors, (943), 297 states have call predecessors, (943), 296 states have return successors, (941), 934 states have call predecessors, (941), 941 states have call successors, (941) [2022-11-16 15:53:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5090 transitions. [2022-11-16 15:53:44,449 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5090 transitions. Word has length 539 [2022-11-16 15:53:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:44,452 INFO L495 AbstractCegarLoop]: Abstraction has 3592 states and 5090 transitions. [2022-11-16 15:53:44,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-16 15:53:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5090 transitions. [2022-11-16 15:53:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-11-16 15:53:44,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:44,469 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:44,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 15:53:44,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:44,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -844425948, now seen corresponding path program 1 times [2022-11-16 15:53:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:44,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011572297] [2022-11-16 15:53:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5021 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5021 trivial. 0 not checked. [2022-11-16 15:53:45,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:45,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011572297] [2022-11-16 15:53:45,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011572297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:45,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:45,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:53:45,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228411900] [2022-11-16 15:53:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:45,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:53:45,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:45,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:53:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:53:45,343 INFO L87 Difference]: Start difference. First operand 3592 states and 5090 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-16 15:53:47,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:53:49,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:53:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:54,340 INFO L93 Difference]: Finished difference Result 10497 states and 14909 transitions. [2022-11-16 15:53:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:53:54,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 542 [2022-11-16 15:53:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:54,407 INFO L225 Difference]: With dead ends: 10497 [2022-11-16 15:53:54,407 INFO L226 Difference]: Without dead ends: 6995 [2022-11-16 15:53:54,433 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 [2022-11-16 15:53:54,434 INFO L413 NwaCegarLoop]: 1981 mSDtfsCounter, 1575 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:54,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3409 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 419 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-16 15:53:54,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6995 states. [2022-11-16 15:53:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6995 to 6991. [2022-11-16 15:53:54,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 4593 states have (on average 1.3657740039190072) internal successors, (6273), 4691 states have internal predecessors, (6273), 1807 states have call successors, (1807), 591 states have call predecessors, (1807), 590 states have return successors, (1829), 1792 states have call predecessors, (1829), 1805 states have call successors, (1829) [2022-11-16 15:53:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 9909 transitions. [2022-11-16 15:53:54,871 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 9909 transitions. Word has length 542 [2022-11-16 15:53:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:54,874 INFO L495 AbstractCegarLoop]: Abstraction has 6991 states and 9909 transitions. [2022-11-16 15:53:54,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-16 15:53:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 9909 transitions. [2022-11-16 15:53:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-11-16 15:53:54,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:54,901 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:54,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 15:53:54,901 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash -431028336, now seen corresponding path program 1 times [2022-11-16 15:53:54,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:54,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617197585] [2022-11-16 15:53:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:54,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-16 15:53:55,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:55,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617197585] [2022-11-16 15:53:55,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617197585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:55,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:55,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:53:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538242635] [2022-11-16 15:53:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:55,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:53:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:53:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:53:55,762 INFO L87 Difference]: Start difference. First operand 6991 states and 9909 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-11-16 15:53:57,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:53:58,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:01,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:04,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:07,768 INFO L93 Difference]: Finished difference Result 18156 states and 25735 transitions. [2022-11-16 15:54:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:07,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 606 [2022-11-16 15:54:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:07,842 INFO L225 Difference]: With dead ends: 18156 [2022-11-16 15:54:07,842 INFO L226 Difference]: Without dead ends: 11264 [2022-11-16 15:54:07,874 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 [2022-11-16 15:54:07,875 INFO L413 NwaCegarLoop]: 2479 mSDtfsCounter, 1561 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:07,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 4010 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-11-16 15:54:07,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11264 states. [2022-11-16 15:54:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11264 to 11252. [2022-11-16 15:54:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11252 states, 7389 states have (on average 1.3629719853836784) internal successors, (10071), 7556 states have internal predecessors, (10071), 2912 states have call successors, (2912), 951 states have call predecessors, (2912), 950 states have return successors, (2950), 2888 states have call predecessors, (2950), 2910 states have call successors, (2950) [2022-11-16 15:54:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11252 states to 11252 states and 15933 transitions. [2022-11-16 15:54:08,461 INFO L78 Accepts]: Start accepts. Automaton has 11252 states and 15933 transitions. Word has length 606 [2022-11-16 15:54:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:08,463 INFO L495 AbstractCegarLoop]: Abstraction has 11252 states and 15933 transitions. [2022-11-16 15:54:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-11-16 15:54:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 11252 states and 15933 transitions. [2022-11-16 15:54:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-16 15:54:08,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:08,487 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:08,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 15:54:08,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:54:08,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1707809189, now seen corresponding path program 1 times [2022-11-16 15:54:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:08,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184149313] [2022-11-16 15:54:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:08,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-16 15:54:09,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:09,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184149313] [2022-11-16 15:54:09,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184149313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:09,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:09,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 15:54:09,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207236643] [2022-11-16 15:54:09,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:09,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:54:09,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:54:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 15:54:09,802 INFO L87 Difference]: Start difference. First operand 11252 states and 15933 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-16 15:54:11,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:15,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:17,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:20,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:22,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:22,060 INFO L93 Difference]: Finished difference Result 22414 states and 31731 transitions. [2022-11-16 15:54:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:54:22,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 605 [2022-11-16 15:54:22,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:22,126 INFO L225 Difference]: With dead ends: 22414 [2022-11-16 15:54:22,126 INFO L226 Difference]: Without dead ends: 11263 [2022-11-16 15:54:22,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:54:22,175 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 8 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:22,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4682 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 605 Invalid, 2 Unknown, 0 Unchecked, 11.9s Time] [2022-11-16 15:54:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11263 states. [2022-11-16 15:54:22,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11263 to 11254. [2022-11-16 15:54:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11254 states, 7391 states have (on average 1.3624678663239074) internal successors, (10070), 7558 states have internal predecessors, (10070), 2912 states have call successors, (2912), 951 states have call predecessors, (2912), 950 states have return successors, (2950), 2888 states have call predecessors, (2950), 2910 states have call successors, (2950) [2022-11-16 15:54:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11254 states to 11254 states and 15932 transitions. [2022-11-16 15:54:22,667 INFO L78 Accepts]: Start accepts. Automaton has 11254 states and 15932 transitions. Word has length 605 [2022-11-16 15:54:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:22,668 INFO L495 AbstractCegarLoop]: Abstraction has 11254 states and 15932 transitions. [2022-11-16 15:54:22,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-16 15:54:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 11254 states and 15932 transitions. [2022-11-16 15:54:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-11-16 15:54:22,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:22,679 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:22,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 15:54:22,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:54:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash -339130652, now seen corresponding path program 1 times [2022-11-16 15:54:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:22,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039242311] [2022-11-16 15:54:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-16 15:54:23,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:23,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039242311] [2022-11-16 15:54:23,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039242311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:23,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:23,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:54:23,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059203090] [2022-11-16 15:54:23,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:23,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:54:23,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:54:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:54:23,995 INFO L87 Difference]: Start difference. First operand 11254 states and 15932 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-16 15:54:25,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:31,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:32,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:35,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:37,496 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 [] [2022-11-16 15:54:39,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:39,274 INFO L93 Difference]: Finished difference Result 22436 states and 31753 transitions. [2022-11-16 15:54:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 15:54:39,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 611 [2022-11-16 15:54:39,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:39,328 INFO L225 Difference]: With dead ends: 22436 [2022-11-16 15:54:39,328 INFO L226 Difference]: Without dead ends: 11274 [2022-11-16 15:54:39,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:54:39,365 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 13 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6246 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:39,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6246 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-11-16 15:54:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11274 states. [2022-11-16 15:54:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11274 to 11261. [2022-11-16 15:54:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11261 states, 7395 states have (on average 1.3614604462474644) internal successors, (10068), 7564 states have internal predecessors, (10068), 2915 states have call successors, (2915), 951 states have call predecessors, (2915), 950 states have return successors, (2953), 2889 states have call predecessors, (2953), 2913 states have call successors, (2953) [2022-11-16 15:54:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11261 states to 11261 states and 15936 transitions. [2022-11-16 15:54:39,848 INFO L78 Accepts]: Start accepts. Automaton has 11261 states and 15936 transitions. Word has length 611 [2022-11-16 15:54:39,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:39,849 INFO L495 AbstractCegarLoop]: Abstraction has 11261 states and 15936 transitions. [2022-11-16 15:54:39,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-16 15:54:39,850 INFO L276 IsEmpty]: Start isEmpty. Operand 11261 states and 15936 transitions. [2022-11-16 15:54:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-11-16 15:54:39,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:39,862 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:39,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 15:54:39,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:54:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1188796981, now seen corresponding path program 1 times [2022-11-16 15:54:39,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:39,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234293215] [2022-11-16 15:54:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:39,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-16 15:54:41,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:41,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234293215] [2022-11-16 15:54:41,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234293215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:41,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:41,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:54:41,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446798086] [2022-11-16 15:54:41,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:41,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:54:41,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:41,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:54:41,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:54:41,077 INFO L87 Difference]: Start difference. First operand 11261 states and 15936 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-16 15:54:42,663 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 [] [2022-11-16 15:54:44,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:46,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:47,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:52,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:54,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:56,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:54:59,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 15:55:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:55:01,628 INFO L93 Difference]: Finished difference Result 22434 states and 31739 transitions. [2022-11-16 15:55:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 15:55:01,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 613 [2022-11-16 15:55:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:55:01,758 INFO L225 Difference]: With dead ends: 22434 [2022-11-16 15:55:01,758 INFO L226 Difference]: Without dead ends: 11259 [2022-11-16 15:55:01,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:55:01,787 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 13 mSDsluCounter, 4676 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6241 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:55:01,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6241 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 806 Invalid, 3 Unknown, 0 Unchecked, 20.2s Time] [2022-11-16 15:55:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11259 states. [2022-11-16 15:55:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11259 to 11229. [2022-11-16 15:55:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11229 states, 7376 states have (on average 1.3619848156182213) internal successors, (10046), 7543 states have internal predecessors, (10046), 2907 states have call successors, (2907), 946 states have call predecessors, (2907), 945 states have return successors, (2945), 2883 states have call predecessors, (2945), 2905 states have call successors, (2945) [2022-11-16 15:55:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11229 states to 11229 states and 15898 transitions. [2022-11-16 15:55:02,212 INFO L78 Accepts]: Start accepts. Automaton has 11229 states and 15898 transitions. Word has length 613 [2022-11-16 15:55:02,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:55:02,213 INFO L495 AbstractCegarLoop]: Abstraction has 11229 states and 15898 transitions. [2022-11-16 15:55:02,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-16 15:55:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 11229 states and 15898 transitions. [2022-11-16 15:55:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2022-11-16 15:55:02,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:02,226 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:55:02,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 15:55:02,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:02,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1018689331, now seen corresponding path program 1 times [2022-11-16 15:55:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:55:02,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947341552] [2022-11-16 15:55:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:55:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:55:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5564 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5553 trivial. 0 not checked. [2022-11-16 15:55:03,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:55:03,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947341552] [2022-11-16 15:55:03,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947341552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:55:03,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:55:03,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:55:03,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663441426] [2022-11-16 15:55:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:55:03,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:55:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:55:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:55:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:55:03,885 INFO L87 Difference]: Start difference. First operand 11229 states and 15898 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2022-11-16 15:55:05,917 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 [] [2022-11-16 15:55:13,716 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 [] [2022-11-16 15:55:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:55:15,384 INFO L93 Difference]: Finished difference Result 22534 states and 31938 transitions. [2022-11-16 15:55:15,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:55:15,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) Word has length 623 [2022-11-16 15:55:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:55:15,432 INFO L225 Difference]: With dead ends: 22534 [2022-11-16 15:55:15,432 INFO L226 Difference]: Without dead ends: 11412 [2022-11-16 15:55:15,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:55:15,465 INFO L413 NwaCegarLoop]: 1760 mSDtfsCounter, 1927 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 65 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 5042 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:55:15,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 5042 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 717 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-16 15:55:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11412 states. [2022-11-16 15:55:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11412 to 11235. [2022-11-16 15:55:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11235 states, 7382 states have (on average 1.3612842048225413) internal successors, (10049), 7549 states have internal predecessors, (10049), 2907 states have call successors, (2907), 946 states have call predecessors, (2907), 945 states have return successors, (2945), 2883 states have call predecessors, (2945), 2905 states have call successors, (2945) [2022-11-16 15:55:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11235 states to 11235 states and 15901 transitions. [2022-11-16 15:55:16,155 INFO L78 Accepts]: Start accepts. Automaton has 11235 states and 15901 transitions. Word has length 623 [2022-11-16 15:55:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:55:16,156 INFO L495 AbstractCegarLoop]: Abstraction has 11235 states and 15901 transitions. [2022-11-16 15:55:16,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 4 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2022-11-16 15:55:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 11235 states and 15901 transitions. [2022-11-16 15:55:16,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-11-16 15:55:16,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:55:16,167 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:55:16,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 15:55:16,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:55:16,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:55:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1303007569, now seen corresponding path program 1 times [2022-11-16 15:55:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:55:16,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202688342] [2022-11-16 15:55:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:55:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:55:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5557 trivial. 0 not checked. [2022-11-16 15:55:18,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:55:18,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202688342] [2022-11-16 15:55:18,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202688342] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:55:18,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870027086] [2022-11-16 15:55:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:55:18,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:55:18,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:55:18,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:55:18,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f63b9aaa-ccb9-477b-88e5-bc3a2279fa76/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:55:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:55:20,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 6146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 15:55:20,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:55:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 537 proven. 1 refuted. 0 times theorem prover too weak. 5031 trivial. 0 not checked. [2022-11-16 15:55:21,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:55:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5557 trivial. 0 not checked. [2022-11-16 15:55:23,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870027086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:55:23,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1423554324] [2022-11-16 15:55:23,467 INFO L159 IcfgInterpreter]: Started Sifa with 196 locations of interest [2022-11-16 15:55:23,467 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:55:23,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:55:23,479 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:55:23,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:55:26,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:26,336 INFO L217 Elim1Store]: Index analysis took 181 ms [2022-11-16 15:55:26,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 169 select indices, 169 select index equivalence classes, 1154 disjoint index pairs (out of 14196 index pairs), introduced 169 new quantified variables, introduced 0 case distinctions, treesize of input 1414 treesize of output 1906 [2022-11-16 15:55:27,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 950 treesize of output 807 [2022-11-16 15:55:30,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:30,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:55:31,499 INFO L217 Elim1Store]: Index analysis took 3283 ms [2022-11-16 16:03:09,758 WARN L233 SmtUtils]: Spent 7.63m on a formula simplification. DAG size of input: 5660 DAG size of output: 1923 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 16:03:09,775 INFO L321 Elim1Store]: treesize reduction 70705, result has 6.7 percent of original size [2022-11-16 16:03:09,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 64 select indices, 64 select index equivalence classes, 2062 disjoint index pairs (out of 2016 index pairs), introduced 64 new quantified variables, introduced 85 case distinctions, treesize of input 393 treesize of output 5264 [2022-11-16 16:03:15,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:15,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:15,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:15,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:15,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:16,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:16,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:16,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:16,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:16,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:16,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:16,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:16,187 INFO L217 Elim1Store]: Index analysis took 571 ms [2022-11-16 16:03:16,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 956 treesize of output 813 [2022-11-16 16:03:40,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:03:50,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:04,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:08,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:20,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:24,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:33,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:44,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:53,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:04:58,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:03,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:05,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:09,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:11,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:17,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:18,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:19,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:19,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:19,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:19,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:05:22,533 INFO L217 Elim1Store]: Index analysis took 106230 ms