./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d57db9f03a5170fd6970a4ac4989029ee35a0e85ad6a1c5337395bb7ff185d1b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:39:33,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:39:33,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:39:33,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:39:33,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:39:33,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:39:33,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:39:33,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:39:33,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:39:33,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:39:33,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:39:33,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:39:33,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:39:33,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:39:33,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:39:33,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:39:33,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:39:33,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:39:33,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:39:33,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:39:33,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:39:33,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:39:33,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:39:33,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:39:33,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:39:33,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:39:33,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:39:33,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:39:33,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:39:33,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:39:33,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:39:33,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:39:33,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:39:33,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:39:33,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:39:33,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:39:33,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:39:33,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:39:33,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:39:33,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:39:33,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:39:33,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:39:33,872 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:39:33,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:39:33,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:39:33,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:39:33,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:39:33,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:39:33,877 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:39:33,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:39:33,878 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:39:33,878 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:39:33,879 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:39:33,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:39:33,879 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:39:33,880 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:39:33,880 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:39:33,880 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:39:33,880 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:39:33,880 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:39:33,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:39:33,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:39:33,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:39:33,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:39:33,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:39:33,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:39:33,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:39:33,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:39:33,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:39:33,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:39:33,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:39:33,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:39:33,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:39:33,886 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:39:33,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:39:33,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:39:33,886 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:39:33,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:39:33,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:39:33,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:39:33,887 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_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57db9f03a5170fd6970a4ac4989029ee35a0e85ad6a1c5337395bb7ff185d1b [2022-11-03 01:39:34,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:39:34,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:39:34,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:39:34,174 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:39:34,175 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:39:34,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-11-03 01:39:34,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/data/642e295f6/255f8db8b52b4a80867e80f87192c090/FLAG42dfc1c50 [2022-11-03 01:39:35,356 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:39:35,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-11-03 01:39:35,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/data/642e295f6/255f8db8b52b4a80867e80f87192c090/FLAG42dfc1c50 [2022-11-03 01:39:35,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/data/642e295f6/255f8db8b52b4a80867e80f87192c090 [2022-11-03 01:39:35,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:39:35,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:39:35,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:39:35,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:39:35,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:39:35,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:39:35" (1/1) ... [2022-11-03 01:39:35,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15392248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:35, skipping insertion in model container [2022-11-03 01:39:35,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:39:35" (1/1) ... [2022-11-03 01:39:35,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:39:35,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:39:40,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[477998,478011] [2022-11-03 01:39:40,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:39:40,422 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:39:41,220 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[477998,478011] [2022-11-03 01:39:41,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:39:41,382 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:39:41,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41 WrapperNode [2022-11-03 01:39:41,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:39:41,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:39:41,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:39:41,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:39:41,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:41,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:41,780 INFO L138 Inliner]: procedures = 483, calls = 2853, calls flagged for inlining = 237, calls inlined = 184, statements flattened = 6899 [2022-11-03 01:39:41,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:39:41,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:39:41,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:39:41,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:39:41,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:41,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:41,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:41,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:42,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:42,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:42,108 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:42,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:42,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:39:42,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:39:42,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:39:42,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:39:42,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (1/1) ... [2022-11-03 01:39:42,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:39:42,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:39:42,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:39:42,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fec568f-6664-420f-bb64-a807401e3a0e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:39:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure ib_wc_status_msg [2022-11-03 01:39:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_wc_status_msg [2022-11-03 01:39:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:39:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:39:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure isert_setup_id [2022-11-03 01:39:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_setup_id [2022-11-03 01:39:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:39:42,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:39:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_isert_conn [2022-11-03 01:39:42,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_isert_conn [2022-11-03 01:39:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 01:39:42,278 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 01:39:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-03 01:39:42,278 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-03 01:39:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_stop_dataout_timer [2022-11-03 01:39:42,279 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_stop_dataout_timer [2022-11-03 01:39:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure rdma_destroy_id [2022-11-03 01:39:42,279 INFO L138 BoogieDeclarations]: Found implementation of procedure rdma_destroy_id [2022-11-03 01:39:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 01:39:42,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 01:39:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure isert_cq_work [2022-11-03 01:39:42,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_cq_work [2022-11-03 01:39:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 01:39:42,280 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 01:39:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_recv [2022-11-03 01:39:42,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_recv [2022-11-03 01:39:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_device [2022-11-03 01:39:42,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_device [2022-11-03 01:39:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:39:42,280 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:39:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_isert_conn [2022-11-03 01:39:42,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_isert_conn [2022-11-03 01:39:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_unmap_single [2022-11-03 01:39:42,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_unmap_single [2022-11-03 01:39:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_send_wr [2022-11-03 01:39:42,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_send_wr [2022-11-03 01:39:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2022-11-03 01:39:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2022-11-03 01:39:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:39:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:39:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:39:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:39:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2022-11-03 01:39:42,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2022-11-03 01:39:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:39:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_address [2022-11-03 01:39:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_address [2022-11-03 01:39:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait_conn [2022-11-03 01:39:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait_conn [2022-11-03 01:39:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-11-03 01:39:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-11-03 01:39:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 01:39:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 01:39:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 01:39:42,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 01:39:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_map_single [2022-11-03 01:39:42,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_map_single [2022-11-03 01:39:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:39:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_terminate [2022-11-03 01:39:42,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_terminate [2022-11-03 01:39:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 01:39:42,287 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 01:39:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:39:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure isert_prot_cmd [2022-11-03 01:39:42,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_prot_cmd [2022-11-03 01:39:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:39:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 01:39:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 01:39:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2022-11-03 01:39:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2022-11-03 01:39:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:39:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:39:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure isert_release_work [2022-11-03 01:39:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_release_work [2022-11-03 01:39:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_np [2022-11-03 01:39:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_np [2022-11-03 01:39:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure isert_comp_put [2022-11-03 01:39:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_comp_put [2022-11-03 01:39:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 01:39:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 01:39:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 01:39:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 01:39:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2022-11-03 01:39:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2022-11-03 01:39:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_from_buffer [2022-11-03 01:39:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_from_buffer [2022-11-03 01:39:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:39:42,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:39:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:39:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 01:39:42,293 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 01:39:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:39:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-03 01:39:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-03 01:39:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:39:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:39:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:39:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:39:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure isert_completion_put [2022-11-03 01:39:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_completion_put [2022-11-03 01:39:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 01:39:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 01:39:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_data_buf [2022-11-03 01:39:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_data_buf [2022-11-03 01:39:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure isert_inv_rkey [2022-11-03 01:39:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_inv_rkey [2022-11-03 01:39:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 01:39:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 01:39:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_cpu [2022-11-03 01:39:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_cpu [2022-11-03 01:39:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:39:42,300 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:39:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure isert_allocate_cmd [2022-11-03 01:39:42,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_allocate_cmd [2022-11-03 01:39:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure isert_do_control_comp [2022-11-03 01:39:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_do_control_comp [2022-11-03 01:39:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_conn [2022-11-03 01:39:42,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_conn [2022-11-03 01:39:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure isert_connect_release [2022-11-03 01:39:42,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_connect_release [2022-11-03 01:39:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_comps [2022-11-03 01:39:42,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_comps [2022-11-03 01:39:42,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:39:42,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:39:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 01:39:42,310 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 01:39:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:39:42,310 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:39:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 01:39:42,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 01:39:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 01:39:42,311 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 01:39:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:39:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:39:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure isert_device_put [2022-11-03 01:39:42,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_device_put [2022-11-03 01:39:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:39:42,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:39:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure isert_map_data_buf [2022-11-03 01:39:42,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_map_data_buf [2022-11-03 01:39:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 01:39:42,312 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 01:39:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_conn [2022-11-03 01:39:42,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_conn [2022-11-03 01:39:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_send [2022-11-03 01:39:42,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_send [2022-11-03 01:39:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_tx_hdrs [2022-11-03 01:39:42,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_tx_hdrs [2022-11-03 01:39:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 01:39:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 01:39:42,313 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 01:39:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 01:39:42,313 INFO L130 BoogieDeclarations]: Found specification of procedure ib_free_fast_reg_page_list [2022-11-03 01:39:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_free_fast_reg_page_list [2022-11-03 01:39:42,313 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 01:39:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 01:39:42,313 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:39:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:39:42,313 INFO L130 BoogieDeclarations]: Found specification of procedure isert_aborted_task [2022-11-03 01:39:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_aborted_task [2022-11-03 01:39:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:39:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:39:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-03 01:39:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-03 01:39:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_response [2022-11-03 01:39:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_response [2022-11-03 01:39:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait4flush [2022-11-03 01:39:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait4flush [2022-11-03 01:39:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:39:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:39:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:39:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:39:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:39:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:39:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_login_buf [2022-11-03 01:39:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_login_buf [2022-11-03 01:39:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 01:39:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 01:39:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 01:39:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 01:39:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:39:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:39:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:39:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_priv_cmd [2022-11-03 01:39:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_priv_cmd [2022-11-03 01:39:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_nopin [2022-11-03 01:39:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_nopin [2022-11-03 01:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-03 01:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-03 01:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_rdma [2022-11-03 01:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_rdma [2022-11-03 01:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_recv [2022-11-03 01:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_recv [2022-11-03 01:39:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 01:39:42,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 01:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:39:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 01:39:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 01:39:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 01:39:42,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 01:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 01:39:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 01:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rdma_post_recvl [2022-11-03 01:39:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rdma_post_recvl [2022-11-03 01:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_free_fastreg_pool [2022-11-03 01:39:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_free_fastreg_pool [2022-11-03 01:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure transport_send_check_condition_and_sense [2022-11-03 01:39:42,319 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_send_check_condition_and_sense [2022-11-03 01:39:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 01:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 01:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_sig_mr [2022-11-03 01:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_sig_mr [2022-11-03 01:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2022-11-03 01:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2022-11-03 01:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_tx_desc [2022-11-03 01:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_tx_desc [2022-11-03 01:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 01:39:42,320 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 01:39:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_list_mutex [2022-11-03 01:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_list_mutex [2022-11-03 01:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_list_mutex [2022-11-03 01:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_list_mutex [2022-11-03 01:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-11-03 01:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-11-03 01:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure isert_handle_prot_cmd [2022-11-03 01:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_handle_prot_cmd [2022-11-03 01:39:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-11-03 01:39:42,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-11-03 01:39:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure ib_req_notify_cq [2022-11-03 01:39:42,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_req_notify_cq [2022-11-03 01:39:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:39:42,322 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:39:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure isert_check_pi_status [2022-11-03 01:39:42,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_check_pi_status [2022-11-03 01:39:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 01:39:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 01:39:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:39:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure isert_create_send_desc [2022-11-03 01:39:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_create_send_desc [2022-11-03 01:39:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:39:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:39:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_len [2022-11-03 01:39:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_len [2022-11-03 01:39:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure isert_fast_reg_mr [2022-11-03 01:39:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_fast_reg_mr [2022-11-03 01:39:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:39:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:39:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-03 01:39:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-03 01:39:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_response [2022-11-03 01:39:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_response [2022-11-03 01:39:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_mr [2022-11-03 01:39:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_mr [2022-11-03 01:39:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 01:39:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 01:39:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rx_login_req [2022-11-03 01:39:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rx_login_req [2022-11-03 01:39:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-03 01:39:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-03 01:39:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_mapping_error [2022-11-03 01:39:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_mapping_error [2022-11-03 01:39:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:39:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 01:39:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 01:39:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure target_put_sess_cmd [2022-11-03 01:39:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure target_put_sess_cmd [2022-11-03 01:39:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure isert_set_dif_domain [2022-11-03 01:39:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_set_dif_domain [2022-11-03 01:39:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 01:39:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 01:39:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-11-03 01:39:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-11-03 01:39:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_page_list [2022-11-03 01:39:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_page_list [2022-11-03 01:39:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_build_rsp_pdu [2022-11-03 01:39:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_build_rsp_pdu [2022-11-03 01:39:43,772 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:39:43,776 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:39:44,054 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:39:51,823 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:39:53,832 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:39:53,832 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:39:53,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:53 BoogieIcfgContainer [2022-11-03 01:39:53,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:39:53,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:39:53,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:39:53,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:39:53,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:39:35" (1/3) ... [2022-11-03 01:39:53,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdda0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:39:53, skipping insertion in model container [2022-11-03 01:39:53,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:41" (2/3) ... [2022-11-03 01:39:53,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdda0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:39:53, skipping insertion in model container [2022-11-03 01:39:53,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:53" (3/3) ... [2022-11-03 01:39:53,852 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-11-03 01:39:53,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:39:53,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:39:53,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:39:54,007 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;@5b7e7e57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:39:54,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:39:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 1807 states, 1085 states have (on average 1.3105990783410137) internal successors, (1422), 1145 states have internal predecessors, (1422), 590 states have call successors, (590), 131 states have call predecessors, (590), 130 states have return successors, (584), 573 states have call predecessors, (584), 584 states have call successors, (584) [2022-11-03 01:39:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:39:54,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:54,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:54,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:39:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 509387961, now seen corresponding path program 1 times [2022-11-03 01:39:54,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:54,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819801722] [2022-11-03 01:39:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:54,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 01:39:54,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:54,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819801722] [2022-11-03 01:39:54,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819801722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:54,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:54,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:39:54,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698044882] [2022-11-03 01:39:54,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:54,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:39:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:39:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:39:54,962 INFO L87 Difference]: Start difference. First operand has 1807 states, 1085 states have (on average 1.3105990783410137) internal successors, (1422), 1145 states have internal predecessors, (1422), 590 states have call successors, (590), 131 states have call predecessors, (590), 130 states have return successors, (584), 573 states have call predecessors, (584), 584 states have call successors, (584) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:39:59,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:00,524 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 [] [2022-11-03 01:40:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:00,752 INFO L93 Difference]: Finished difference Result 3608 states and 5230 transitions. [2022-11-03 01:40:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-11-03 01:40:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:00,784 INFO L225 Difference]: With dead ends: 3608 [2022-11-03 01:40:00,784 INFO L226 Difference]: Without dead ends: 1797 [2022-11-03 01:40:00,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:00,808 INFO L413 NwaCegarLoop]: 2267 mSDtfsCounter, 2509 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:00,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 2305 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 01:40:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-11-03 01:40:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2022-11-03 01:40:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1078 states have (on average 1.2940630797773656) internal successors, (1395), 1128 states have internal predecessors, (1395), 582 states have call successors, (582), 135 states have call predecessors, (582), 134 states have return successors, (572), 561 states have call predecessors, (572), 572 states have call successors, (572) [2022-11-03 01:40:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2549 transitions. [2022-11-03 01:40:01,148 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2549 transitions. Word has length 65 [2022-11-03 01:40:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:01,149 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2549 transitions. [2022-11-03 01:40:01,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:40:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2549 transitions. [2022-11-03 01:40:01,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 01:40:01,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:01,154 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:01,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:40:01,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1389816972, now seen corresponding path program 1 times [2022-11-03 01:40:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:01,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315616261] [2022-11-03 01:40:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:01,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 01:40:01,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:01,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315616261] [2022-11-03 01:40:01,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315616261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:01,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:01,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:01,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729760566] [2022-11-03 01:40:01,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:01,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:01,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:01,515 INFO L87 Difference]: Start difference. First operand 1795 states and 2549 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:40:03,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:06,196 INFO L93 Difference]: Finished difference Result 1797 states and 2550 transitions. [2022-11-03 01:40:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:06,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-11-03 01:40:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:06,208 INFO L225 Difference]: With dead ends: 1797 [2022-11-03 01:40:06,208 INFO L226 Difference]: Without dead ends: 1794 [2022-11-03 01:40:06,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:06,211 INFO L413 NwaCegarLoop]: 2232 mSDtfsCounter, 2517 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:06,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 2232 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 01:40:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-11-03 01:40:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1794. [2022-11-03 01:40:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1078 states have (on average 1.2931354359925789) internal successors, (1394), 1127 states have internal predecessors, (1394), 581 states have call successors, (581), 135 states have call predecessors, (581), 134 states have return successors, (572), 561 states have call predecessors, (572), 572 states have call successors, (572) [2022-11-03 01:40:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2547 transitions. [2022-11-03 01:40:06,334 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2547 transitions. Word has length 66 [2022-11-03 01:40:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:06,336 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2547 transitions. [2022-11-03 01:40:06,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:40:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2547 transitions. [2022-11-03 01:40:06,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 01:40:06,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:06,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:06,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:40:06,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash -135622884, now seen corresponding path program 1 times [2022-11-03 01:40:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:06,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732709129] [2022-11-03 01:40:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 01:40:06,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:06,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732709129] [2022-11-03 01:40:06,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732709129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:06,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:06,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:06,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968343031] [2022-11-03 01:40:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:06,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:06,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:06,763 INFO L87 Difference]: Start difference. First operand 1794 states and 2547 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:40:07,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:12,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:12,497 INFO L93 Difference]: Finished difference Result 1796 states and 2548 transitions. [2022-11-03 01:40:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:12,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-11-03 01:40:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:12,512 INFO L225 Difference]: With dead ends: 1796 [2022-11-03 01:40:12,513 INFO L226 Difference]: Without dead ends: 1793 [2022-11-03 01:40:12,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:12,517 INFO L413 NwaCegarLoop]: 2230 mSDtfsCounter, 2514 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:12,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 2230 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 01:40:12,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2022-11-03 01:40:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1793. [2022-11-03 01:40:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1078 states have (on average 1.2922077922077921) internal successors, (1393), 1126 states have internal predecessors, (1393), 580 states have call successors, (580), 135 states have call predecessors, (580), 134 states have return successors, (572), 561 states have call predecessors, (572), 572 states have call successors, (572) [2022-11-03 01:40:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2545 transitions. [2022-11-03 01:40:12,650 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2545 transitions. Word has length 67 [2022-11-03 01:40:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:12,651 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2545 transitions. [2022-11-03 01:40:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:40:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2545 transitions. [2022-11-03 01:40:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 01:40:12,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:12,655 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:12,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:40:12,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash 984461906, now seen corresponding path program 1 times [2022-11-03 01:40:12,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:12,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633951304] [2022-11-03 01:40:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:12,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 01:40:12,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:12,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633951304] [2022-11-03 01:40:12,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633951304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:12,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:12,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424246002] [2022-11-03 01:40:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:12,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:12,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:12,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:12,938 INFO L87 Difference]: Start difference. First operand 1793 states and 2545 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 01:40:14,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:17,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:20,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:22,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:25,457 INFO L93 Difference]: Finished difference Result 4933 states and 6964 transitions. [2022-11-03 01:40:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:25,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-11-03 01:40:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:25,479 INFO L225 Difference]: With dead ends: 4933 [2022-11-03 01:40:25,480 INFO L226 Difference]: Without dead ends: 3155 [2022-11-03 01:40:25,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:25,491 INFO L413 NwaCegarLoop]: 2694 mSDtfsCounter, 1869 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 4882 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:25,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1882 Valid, 4882 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 671 Invalid, 4 Unknown, 0 Unchecked, 12.2s Time] [2022-11-03 01:40:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2022-11-03 01:40:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 3135. [2022-11-03 01:40:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 1887 states have (on average 1.2909379968203498) internal successors, (2436), 1977 states have internal predecessors, (2436), 988 states have call successors, (988), 260 states have call predecessors, (988), 259 states have return successors, (993), 955 states have call predecessors, (993), 980 states have call successors, (993) [2022-11-03 01:40:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4417 transitions. [2022-11-03 01:40:25,847 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4417 transitions. Word has length 69 [2022-11-03 01:40:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:25,848 INFO L495 AbstractCegarLoop]: Abstraction has 3135 states and 4417 transitions. [2022-11-03 01:40:25,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 01:40:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4417 transitions. [2022-11-03 01:40:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 01:40:25,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:25,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:25,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:40:25,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 89693047, now seen corresponding path program 1 times [2022-11-03 01:40:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:25,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264848358] [2022-11-03 01:40:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:25,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 01:40:26,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:26,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264848358] [2022-11-03 01:40:26,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264848358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:26,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:26,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625590616] [2022-11-03 01:40:26,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:26,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:26,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:26,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:26,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:26,245 INFO L87 Difference]: Start difference. First operand 3135 states and 4417 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:40:28,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:31,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:33,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:35,655 INFO L93 Difference]: Finished difference Result 3798 states and 5290 transitions. [2022-11-03 01:40:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:35,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-03 01:40:35,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:35,685 INFO L225 Difference]: With dead ends: 3798 [2022-11-03 01:40:35,685 INFO L226 Difference]: Without dead ends: 3795 [2022-11-03 01:40:35,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:35,689 INFO L413 NwaCegarLoop]: 2329 mSDtfsCounter, 2502 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:35,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2503 Valid, 2716 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 380 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 01:40:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2022-11-03 01:40:35,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 3793. [2022-11-03 01:40:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 2277 states have (on average 1.279754062362758) internal successors, (2914), 2379 states have internal predecessors, (2914), 1180 states have call successors, (1180), 336 states have call predecessors, (1180), 335 states have return successors, (1191), 1141 states have call predecessors, (1191), 1173 states have call successors, (1191) [2022-11-03 01:40:35,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5285 transitions. [2022-11-03 01:40:35,963 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5285 transitions. Word has length 68 [2022-11-03 01:40:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:35,964 INFO L495 AbstractCegarLoop]: Abstraction has 3793 states and 5285 transitions. [2022-11-03 01:40:35,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:40:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5285 transitions. [2022-11-03 01:40:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 01:40:35,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:35,966 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:35,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:40:35,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash -401796092, now seen corresponding path program 1 times [2022-11-03 01:40:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:35,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010743744] [2022-11-03 01:40:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 01:40:36,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:36,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010743744] [2022-11-03 01:40:36,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010743744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:36,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:36,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627763933] [2022-11-03 01:40:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:36,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:36,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:36,490 INFO L87 Difference]: Start difference. First operand 3793 states and 5285 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 01:40:38,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:40,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:44,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:46,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:48,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:50,984 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 [] [2022-11-03 01:40:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:51,483 INFO L93 Difference]: Finished difference Result 7221 states and 10173 transitions. [2022-11-03 01:40:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:40:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2022-11-03 01:40:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:51,532 INFO L225 Difference]: With dead ends: 7221 [2022-11-03 01:40:51,532 INFO L226 Difference]: Without dead ends: 7217 [2022-11-03 01:40:51,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:51,539 INFO L413 NwaCegarLoop]: 2844 mSDtfsCounter, 2466 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:51,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 5039 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 629 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2022-11-03 01:40:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7217 states. [2022-11-03 01:40:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7217 to 7211. [2022-11-03 01:40:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7211 states, 4349 states have (on average 1.2823637617843182) internal successors, (5577), 4540 states have internal predecessors, (5577), 2222 states have call successors, (2222), 638 states have call predecessors, (2222), 639 states have return successors, (2363), 2155 states have call predecessors, (2363), 2215 states have call successors, (2363) [2022-11-03 01:40:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7211 states to 7211 states and 10162 transitions. [2022-11-03 01:40:52,163 INFO L78 Accepts]: Start accepts. Automaton has 7211 states and 10162 transitions. Word has length 76 [2022-11-03 01:40:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:52,164 INFO L495 AbstractCegarLoop]: Abstraction has 7211 states and 10162 transitions. [2022-11-03 01:40:52,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 01:40:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 7211 states and 10162 transitions. [2022-11-03 01:40:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 01:40:52,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:52,167 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:52,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:40:52,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash 264957818, now seen corresponding path program 1 times [2022-11-03 01:40:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:52,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53082725] [2022-11-03 01:40:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:52,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 01:40:52,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:52,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53082725] [2022-11-03 01:40:52,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53082725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:52,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:52,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:40:52,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242201582] [2022-11-03 01:40:52,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:52,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:40:52,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:40:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:40:52,443 INFO L87 Difference]: Start difference. First operand 7211 states and 10162 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:40:54,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:56,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:00,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:04,312 INFO L93 Difference]: Finished difference Result 10180 states and 14179 transitions. [2022-11-03 01:41:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:04,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-03 01:41:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:04,366 INFO L225 Difference]: With dead ends: 10180 [2022-11-03 01:41:04,366 INFO L226 Difference]: Without dead ends: 10164 [2022-11-03 01:41:04,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:04,373 INFO L413 NwaCegarLoop]: 2623 mSDtfsCounter, 2451 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:04,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 3911 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 548 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-11-03 01:41:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10164 states. [2022-11-03 01:41:05,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10164 to 10158. [2022-11-03 01:41:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10158 states, 6093 states have (on average 1.2714590513704251) internal successors, (7747), 6354 states have internal predecessors, (7747), 3116 states have call successors, (3116), 946 states have call predecessors, (3116), 948 states have return successors, (3284), 3031 states have call predecessors, (3284), 3111 states have call successors, (3284) [2022-11-03 01:41:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10158 states to 10158 states and 14147 transitions. [2022-11-03 01:41:05,138 INFO L78 Accepts]: Start accepts. Automaton has 10158 states and 14147 transitions. Word has length 70 [2022-11-03 01:41:05,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:05,139 INFO L495 AbstractCegarLoop]: Abstraction has 10158 states and 14147 transitions. [2022-11-03 01:41:05,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:41:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 10158 states and 14147 transitions. [2022-11-03 01:41:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 01:41:05,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:05,148 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:05,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:41:05,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash 88082067, now seen corresponding path program 1 times [2022-11-03 01:41:05,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:05,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126376812] [2022-11-03 01:41:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:05,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 01:41:05,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:05,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126376812] [2022-11-03 01:41:05,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126376812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:05,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:05,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:41:05,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542064744] [2022-11-03 01:41:05,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:05,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:05,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:05,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:05,538 INFO L87 Difference]: Start difference. First operand 10158 states and 14147 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:41:07,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:10,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:12,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:14,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:16,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:17,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:17,133 INFO L93 Difference]: Finished difference Result 10172 states and 14154 transitions. [2022-11-03 01:41:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 85 [2022-11-03 01:41:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:17,190 INFO L225 Difference]: With dead ends: 10172 [2022-11-03 01:41:17,190 INFO L226 Difference]: Without dead ends: 10169 [2022-11-03 01:41:17,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:17,200 INFO L413 NwaCegarLoop]: 2221 mSDtfsCounter, 49 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 4393 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:17,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 4393 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 617 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 01:41:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10169 states. [2022-11-03 01:41:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10169 to 10169. [2022-11-03 01:41:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10169 states, 6099 states have (on average 1.2707001147729136) internal successors, (7750), 6359 states have internal predecessors, (7750), 3115 states have call successors, (3115), 952 states have call predecessors, (3115), 954 states have return successors, (3284), 3031 states have call predecessors, (3284), 3111 states have call successors, (3284) [2022-11-03 01:41:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10169 states to 10169 states and 14149 transitions. [2022-11-03 01:41:18,221 INFO L78 Accepts]: Start accepts. Automaton has 10169 states and 14149 transitions. Word has length 85 [2022-11-03 01:41:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:18,221 INFO L495 AbstractCegarLoop]: Abstraction has 10169 states and 14149 transitions. [2022-11-03 01:41:18,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:41:18,222 INFO L276 IsEmpty]: Start isEmpty. Operand 10169 states and 14149 transitions. [2022-11-03 01:41:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-03 01:41:18,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:18,234 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:18,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:41:18,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:18,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2087967521, now seen corresponding path program 1 times [2022-11-03 01:41:18,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:18,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964304707] [2022-11-03 01:41:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:18,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-03 01:41:18,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964304707] [2022-11-03 01:41:18,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964304707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:18,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:18,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:41:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434706578] [2022-11-03 01:41:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:18,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:18,657 INFO L87 Difference]: Start difference. First operand 10169 states and 14149 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:41:20,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:24,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:26,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:27,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:30,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:31,498 INFO L93 Difference]: Finished difference Result 10254 states and 14221 transitions. [2022-11-03 01:41:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:31,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 136 [2022-11-03 01:41:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:31,546 INFO L225 Difference]: With dead ends: 10254 [2022-11-03 01:41:31,546 INFO L226 Difference]: Without dead ends: 10251 [2022-11-03 01:41:31,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:31,555 INFO L413 NwaCegarLoop]: 2364 mSDtfsCounter, 222 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 4547 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:31,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 4547 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 638 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2022-11-03 01:41:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10251 states. [2022-11-03 01:41:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10251 to 10248. [2022-11-03 01:41:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10248 states, 6142 states have (on average 1.2686421361120157) internal successors, (7792), 6401 states have internal predecessors, (7792), 3126 states have call successors, (3126), 977 states have call predecessors, (3126), 979 states have return successors, (3296), 3043 states have call predecessors, (3296), 3123 states have call successors, (3296) [2022-11-03 01:41:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10248 states to 10248 states and 14214 transitions. [2022-11-03 01:41:32,323 INFO L78 Accepts]: Start accepts. Automaton has 10248 states and 14214 transitions. Word has length 136 [2022-11-03 01:41:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:32,324 INFO L495 AbstractCegarLoop]: Abstraction has 10248 states and 14214 transitions. [2022-11-03 01:41:32,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 01:41:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 10248 states and 14214 transitions. [2022-11-03 01:41:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 01:41:32,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:32,342 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 01:41:32,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:41:32,342 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash -414765117, now seen corresponding path program 1 times [2022-11-03 01:41:32,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:32,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640761090] [2022-11-03 01:41:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:32,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 01:41:32,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:32,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640761090] [2022-11-03 01:41:32,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640761090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:32,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:32,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:41:32,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664778407] [2022-11-03 01:41:32,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:32,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:32,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:32,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:32,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:32,785 INFO L87 Difference]: Start difference. First operand 10248 states and 14214 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:41:34,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:39,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:41,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:42,276 INFO L93 Difference]: Finished difference Result 10250 states and 14215 transitions. [2022-11-03 01:41:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:42,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 152 [2022-11-03 01:41:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:42,330 INFO L225 Difference]: With dead ends: 10250 [2022-11-03 01:41:42,330 INFO L226 Difference]: Without dead ends: 10247 [2022-11-03 01:41:42,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:42,342 INFO L413 NwaCegarLoop]: 2217 mSDtfsCounter, 42 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:42,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 4396 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 618 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 01:41:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2022-11-03 01:41:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 10247. [2022-11-03 01:41:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10247 states, 6142 states have (on average 1.267665255617063) internal successors, (7786), 6400 states have internal predecessors, (7786), 3125 states have call successors, (3125), 977 states have call predecessors, (3125), 979 states have return successors, (3296), 3043 states have call predecessors, (3296), 3123 states have call successors, (3296) [2022-11-03 01:41:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10247 states to 10247 states and 14207 transitions. [2022-11-03 01:41:43,154 INFO L78 Accepts]: Start accepts. Automaton has 10247 states and 14207 transitions. Word has length 152 [2022-11-03 01:41:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:43,156 INFO L495 AbstractCegarLoop]: Abstraction has 10247 states and 14207 transitions. [2022-11-03 01:41:43,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:41:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 10247 states and 14207 transitions. [2022-11-03 01:41:43,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-03 01:41:43,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:43,193 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 01:41:43,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:41:43,194 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:43,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:43,195 INFO L85 PathProgramCache]: Analyzing trace with hash -10108978, now seen corresponding path program 1 times [2022-11-03 01:41:43,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:43,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348584459] [2022-11-03 01:41:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-03 01:41:43,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:43,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348584459] [2022-11-03 01:41:43,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348584459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:43,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:43,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:41:43,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581968194] [2022-11-03 01:41:43,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:43,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:41:43,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:43,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:41:43,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:41:43,986 INFO L87 Difference]: Start difference. First operand 10247 states and 14207 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 01:41:46,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:47,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:57,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:00,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:04,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:10,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:12,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:17,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:18,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:21,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:24,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:33,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:40,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:40,121 INFO L93 Difference]: Finished difference Result 38326 states and 54532 transitions. [2022-11-03 01:42:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:42:40,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 170 [2022-11-03 01:42:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:40,271 INFO L225 Difference]: With dead ends: 38326 [2022-11-03 01:42:40,271 INFO L226 Difference]: Without dead ends: 28094 [2022-11-03 01:42:40,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:42:40,343 INFO L413 NwaCegarLoop]: 3745 mSDtfsCounter, 3777 mSDsluCounter, 5588 mSDsCounter, 0 mSdLazyCounter, 13147 mSolverCounterSat, 3093 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 8418 SdHoareTripleChecker+Invalid, 16247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3093 IncrementalHoareTripleChecker+Valid, 13147 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:40,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 8418 Invalid, 16247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3093 Valid, 13147 Invalid, 7 Unknown, 0 Unchecked, 53.9s Time] [2022-11-03 01:42:40,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28094 states. [2022-11-03 01:42:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28094 to 27879. [2022-11-03 01:42:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27879 states, 16856 states have (on average 1.2828073089700998) internal successors, (21623), 17657 states have internal predecessors, (21623), 8467 states have call successors, (8467), 2439 states have call predecessors, (8467), 2555 states have return successors, (9804), 8271 states have call predecessors, (9804), 8465 states have call successors, (9804) [2022-11-03 01:42:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27879 states to 27879 states and 39894 transitions. [2022-11-03 01:42:42,546 INFO L78 Accepts]: Start accepts. Automaton has 27879 states and 39894 transitions. Word has length 170 [2022-11-03 01:42:42,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:42,550 INFO L495 AbstractCegarLoop]: Abstraction has 27879 states and 39894 transitions. [2022-11-03 01:42:42,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 01:42:42,550 INFO L276 IsEmpty]: Start isEmpty. Operand 27879 states and 39894 transitions. [2022-11-03 01:42:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-03 01:42:42,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:42,835 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 01:42:42,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:42:42,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -233988829, now seen corresponding path program 1 times [2022-11-03 01:42:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:42,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023537356] [2022-11-03 01:42:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-03 01:42:43,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:43,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023537356] [2022-11-03 01:42:43,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023537356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:43,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:43,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:42:43,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812152978] [2022-11-03 01:42:43,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:43,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:42:43,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:43,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:42:43,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:42:43,596 INFO L87 Difference]: Start difference. First operand 27879 states and 39894 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 01:42:45,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:55,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:58,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:02,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:05,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:10,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:13,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:14,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:20,815 INFO L93 Difference]: Finished difference Result 77305 states and 112079 transitions. [2022-11-03 01:43:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:43:20,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 180 [2022-11-03 01:43:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:21,331 INFO L225 Difference]: With dead ends: 77305 [2022-11-03 01:43:21,331 INFO L226 Difference]: Without dead ends: 49417 [2022-11-03 01:43:21,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:43:21,694 INFO L413 NwaCegarLoop]: 2336 mSDtfsCounter, 3135 mSDsluCounter, 3820 mSDsCounter, 0 mSdLazyCounter, 9497 mSolverCounterSat, 2361 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3645 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 11863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2361 IncrementalHoareTripleChecker+Valid, 9497 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:21,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3645 Valid, 5569 Invalid, 11863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2361 Valid, 9497 Invalid, 5 Unknown, 0 Unchecked, 33.7s Time] [2022-11-03 01:43:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49417 states. [2022-11-03 01:43:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49417 to 48986. [2022-11-03 01:43:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48986 states, 29669 states have (on average 1.283326030536924) internal successors, (38075), 31070 states have internal predecessors, (38075), 14836 states have call successors, (14836), 4279 states have call predecessors, (14836), 4480 states have return successors, (17892), 14484 states have call predecessors, (17892), 14826 states have call successors, (17892) [2022-11-03 01:43:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48986 states to 48986 states and 70803 transitions. [2022-11-03 01:43:26,251 INFO L78 Accepts]: Start accepts. Automaton has 48986 states and 70803 transitions. Word has length 180 [2022-11-03 01:43:26,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:26,252 INFO L495 AbstractCegarLoop]: Abstraction has 48986 states and 70803 transitions. [2022-11-03 01:43:26,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 01:43:26,253 INFO L276 IsEmpty]: Start isEmpty. Operand 48986 states and 70803 transitions. [2022-11-03 01:43:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 01:43:26,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:26,308 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 01:43:26,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:43:26,309 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash 810789430, now seen corresponding path program 1 times [2022-11-03 01:43:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:26,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225071302] [2022-11-03 01:43:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:26,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-03 01:43:27,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225071302] [2022-11-03 01:43:27,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225071302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:27,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:27,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:43:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744110037] [2022-11-03 01:43:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:43:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:27,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:43:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:43:27,493 INFO L87 Difference]: Start difference. First operand 48986 states and 70803 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 01:43:29,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:31,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:33,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:51,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:43:57,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:00,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:02,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:04,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:08,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:14,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:15,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:17,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:27,949 INFO L93 Difference]: Finished difference Result 170365 states and 246304 transitions. [2022-11-03 01:44:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:44:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 171 [2022-11-03 01:44:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:28,684 INFO L225 Difference]: With dead ends: 170365 [2022-11-03 01:44:28,684 INFO L226 Difference]: Without dead ends: 121402 [2022-11-03 01:44:29,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:44:29,100 INFO L413 NwaCegarLoop]: 3497 mSDtfsCounter, 3815 mSDsluCounter, 5032 mSDsCounter, 0 mSdLazyCounter, 12938 mSolverCounterSat, 3193 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 7687 SdHoareTripleChecker+Invalid, 16139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3193 IncrementalHoareTripleChecker+Valid, 12938 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:29,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4409 Valid, 7687 Invalid, 16139 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3193 Valid, 12938 Invalid, 8 Unknown, 0 Unchecked, 51.1s Time] [2022-11-03 01:44:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121402 states. [2022-11-03 01:44:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121402 to 120876. [2022-11-03 01:44:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120876 states, 73134 states have (on average 1.2794186014712718) internal successors, (93569), 76561 states have internal predecessors, (93569), 36421 states have call successors, (36421), 10918 states have call predecessors, (36421), 11320 states have return successors, (44019), 35408 states have call predecessors, (44019), 36403 states have call successors, (44019) [2022-11-03 01:44:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120876 states to 120876 states and 174009 transitions. [2022-11-03 01:44:40,245 INFO L78 Accepts]: Start accepts. Automaton has 120876 states and 174009 transitions. Word has length 171 [2022-11-03 01:44:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:40,246 INFO L495 AbstractCegarLoop]: Abstraction has 120876 states and 174009 transitions. [2022-11-03 01:44:40,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 01:44:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 120876 states and 174009 transitions. [2022-11-03 01:44:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 01:44:40,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:40,336 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 01:44:40,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:44:40,336 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1227067019, now seen corresponding path program 1 times [2022-11-03 01:44:40,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:40,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625388619] [2022-11-03 01:44:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:40,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-03 01:44:41,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:41,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625388619] [2022-11-03 01:44:41,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625388619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:41,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:41,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:44:41,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8959935] [2022-11-03 01:44:41,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:41,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:44:41,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:41,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:44:41,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:44:41,076 INFO L87 Difference]: Start difference. First operand 120876 states and 174009 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 01:44:42,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:44,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:44:46,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:04,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:07,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:13,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:16,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:21,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:24,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:26,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:30,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:32,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:34,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:38,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:40,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:42,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []