./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--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW --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 dfd6d574d08999b62054724022525ae58fcf8eb53291450098ab652e14e39cce --- 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-4e7fbc6 [2022-11-23 15:46:53,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:46:53,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:46:53,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:46:53,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:46:53,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:46:53,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:46:53,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:46:53,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:46:53,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:46:53,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:46:53,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:46:53,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:46:53,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:46:53,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:46:53,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:46:53,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:46:53,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:46:53,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:46:53,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:46:53,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:46:53,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:46:53,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:46:53,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:46:53,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:46:53,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:46:53,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:46:53,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:46:53,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:46:53,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:46:53,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:46:53,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:46:53,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:46:53,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:46:53,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:46:53,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:46:53,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:46:53,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:46:53,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:46:53,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:46:53,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:46:53,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:46:53,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:46:53,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:46:53,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:46:53,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:46:53,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:46:53,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:46:53,851 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:46:53,852 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:46:53,852 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:46:53,852 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:46:53,853 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:46:53,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:46:53,853 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:46:53,854 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:46:53,854 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:46:53,854 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:46:53,854 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:46:53,854 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:46:53,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:46:53,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:46:53,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:46:53,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:46:53,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:46:53,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:46:53,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:46:53,857 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:46:53,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:46:53,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:46:53,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:46:53,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:46:53,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:46:53,858 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:46:53,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:46:53,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:46:53,859 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:46:53,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:46:53,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:46:53,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:46:53,859 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_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd6d574d08999b62054724022525ae58fcf8eb53291450098ab652e14e39cce [2022-11-23 15:46:54,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:46:54,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:46:54,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:46:54,163 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:46:54,164 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:46:54,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2022-11-23 15:46:57,156 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:46:57,961 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:46:57,962 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2022-11-23 15:46:58,030 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/data/eeb86db49/79db54eeb07a4b88ab843e294a4b82dd/FLAGe5e4905ed [2022-11-23 15:46:58,051 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/data/eeb86db49/79db54eeb07a4b88ab843e294a4b82dd [2022-11-23 15:46:58,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:46:58,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:46:58,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:46:58,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:46:58,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:46:58,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:58" (1/1) ... [2022-11-23 15:46:58,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218e2725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:58, skipping insertion in model container [2022-11-23 15:46:58,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:58" (1/1) ... [2022-11-23 15:46:58,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:46:58,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:47:02,700 WARN L237 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_50e462bb-ec1d-45d0-8949-80f79fa4de11/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[479141,479154] [2022-11-23 15:47:03,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:47:03,210 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:47:03,851 WARN L237 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_50e462bb-ec1d-45d0-8949-80f79fa4de11/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[479141,479154] [2022-11-23 15:47:03,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:47:04,188 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:47:04,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04 WrapperNode [2022-11-23 15:47:04,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:47:04,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:47:04,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:47:04,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:47:04,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:04,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:04,614 INFO L138 Inliner]: procedures = 606, calls = 6517, calls flagged for inlining = 203, calls inlined = 162, statements flattened = 7772 [2022-11-23 15:47:04,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:47:04,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:47:04,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:47:04,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:47:04,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:04,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:04,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:04,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:04,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:05,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:05,057 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:05,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:05,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:47:05,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:47:05,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:47:05,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:47:05,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (1/1) ... [2022-11-23 15:47:05,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:47:05,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:47:05,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:47:05,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:47:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2022-11-23 15:47:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2022-11-23 15:47:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2022-11-23 15:47:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2022-11-23 15:47:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_5 [2022-11-23 15:47:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_5 [2022-11-23 15:47:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-23 15:47:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 15:47:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 15:47:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:47:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:47:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2022-11-23 15:47:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2022-11-23 15:47:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:47:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:47:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:47:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:47:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2022-11-23 15:47:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2022-11-23 15:47:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-23 15:47:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-23 15:47:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:47:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:47:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 15:47:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 15:47:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:47:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:47:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2022-11-23 15:47:05,235 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2022-11-23 15:47:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2022-11-23 15:47:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2022-11-23 15:47:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2022-11-23 15:47:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2022-11-23 15:47:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:47:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:47:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:47:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:47:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:47:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:47:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2022-11-23 15:47:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2022-11-23 15:47:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 15:47:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 15:47:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 15:47:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 15:47:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:47:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 15:47:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 15:47:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:47:05,240 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:47:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-23 15:47:05,241 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-23 15:47:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2022-11-23 15:47:05,241 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2022-11-23 15:47:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:47:05,241 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:47:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 15:47:05,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 15:47:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:47:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2022-11-23 15:47:05,243 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2022-11-23 15:47:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:47:05,243 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:47:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-23 15:47:05,243 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-23 15:47:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:47:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:47:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:47:05,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:47:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:47:05,244 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:47:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_set_mac_address [2022-11-23 15:47:05,245 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_set_mac_address [2022-11-23 15:47:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2022-11-23 15:47:05,246 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2022-11-23 15:47:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:47:05,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:47:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 15:47:05,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 15:47:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:47:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:47:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:47:05,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:47:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:47:05,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:47:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:47:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:47:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:47:05,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:47:05,250 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-23 15:47:05,250 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-23 15:47:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 15:47:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 15:47:05,251 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-23 15:47:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-23 15:47:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 15:47:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 15:47:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 15:47:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 15:47:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-11-23 15:47:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-11-23 15:47:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-23 15:47:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-23 15:47:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-23 15:47:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-23 15:47:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:47:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:47:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 15:47:05,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 15:47:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-23 15:47:05,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-23 15:47:05,259 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2022-11-23 15:47:05,260 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2022-11-23 15:47:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:47:05,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:47:05,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:47:05,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:47:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:47:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:47:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 15:47:05,269 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 15:47:05,269 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:47:05,269 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:47:05,269 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 15:47:05,269 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 15:47:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2022-11-23 15:47:05,270 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2022-11-23 15:47:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2022-11-23 15:47:05,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2022-11-23 15:47:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2022-11-23 15:47:05,270 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2022-11-23 15:47:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:47:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:47:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:47:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:47:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 15:47:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 15:47:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:47:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:47:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:47:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:47:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:47:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:47:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 15:47:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 15:47:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-23 15:47:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-23 15:47:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 15:47:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 15:47:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 15:47:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 15:47:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-23 15:47:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-23 15:47:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:47:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:47:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:47:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2022-11-23 15:47:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2022-11-23 15:47:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:47:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-23 15:47:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-23 15:47:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-23 15:47:05,275 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-23 15:47:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-23 15:47:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-23 15:47:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:47:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-23 15:47:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-23 15:47:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 15:47:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 15:47:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:47:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:47:05,278 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-23 15:47:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-23 15:47:05,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-23 15:47:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-23 15:47:05,278 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 15:47:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 15:47:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:47:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:47:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2022-11-23 15:47:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2022-11-23 15:47:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2022-11-23 15:47:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2022-11-23 15:47:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:47:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:47:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-23 15:47:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-23 15:47:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-23 15:47:05,280 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-23 15:47:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2022-11-23 15:47:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2022-11-23 15:47:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-23 15:47:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-23 15:47:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single___1 [2022-11-23 15:47:05,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single___1 [2022-11-23 15:47:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:47:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:47:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2022-11-23 15:47:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2022-11-23 15:47:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2022-11-23 15:47:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2022-11-23 15:47:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:47:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:47:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2022-11-23 15:47:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2022-11-23 15:47:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mgmt_lock_of_NOT_ARG_SIGN [2022-11-23 15:47:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mgmt_lock_of_NOT_ARG_SIGN [2022-11-23 15:47:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:47:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-23 15:47:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-23 15:47:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_stats_lock_of_NOT_ARG_SIGN [2022-11-23 15:47:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_stats_lock_of_NOT_ARG_SIGN [2022-11-23 15:47:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-23 15:47:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-23 15:47:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:47:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:47:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2022-11-23 15:47:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2022-11-23 15:47:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_islpci_acl [2022-11-23 15:47:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_islpci_acl [2022-11-23 15:47:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2022-11-23 15:47:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2022-11-23 15:47:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 15:47:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 15:47:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-23 15:47:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-23 15:47:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-23 15:47:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-23 15:47:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2022-11-23 15:47:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2022-11-23 15:47:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-23 15:47:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-23 15:47:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 15:47:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 15:47:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_5 [2022-11-23 15:47:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_5 [2022-11-23 15:47:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 15:47:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 15:47:05,293 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-23 15:47:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-23 15:47:05,293 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2022-11-23 15:47:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2022-11-23 15:47:05,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_islpci_acl [2022-11-23 15:47:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_islpci_acl [2022-11-23 15:47:05,294 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single___0 [2022-11-23 15:47:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single___0 [2022-11-23 15:47:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 15:47:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 15:47:05,296 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:47:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:47:05,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:47:05,297 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 15:47:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 15:47:05,297 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2022-11-23 15:47:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2022-11-23 15:47:06,528 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:47:06,536 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:47:07,073 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:47:16,074 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:47:17,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:47:17,391 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:47:17,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:47:17 BoogieIcfgContainer [2022-11-23 15:47:17,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:47:17,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:47:17,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:47:17,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:47:17,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:46:58" (1/3) ... [2022-11-23 15:47:17,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abacd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:47:17, skipping insertion in model container [2022-11-23 15:47:17,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:04" (2/3) ... [2022-11-23 15:47:17,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abacd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:47:17, skipping insertion in model container [2022-11-23 15:47:17,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:47:17" (3/3) ... [2022-11-23 15:47:17,405 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2022-11-23 15:47:17,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:47:17,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:47:17,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:47:17,509 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;@36d5c88b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:47:17,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:47:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 1560 states, 961 states have (on average 1.3350676378772113) internal successors, (1283), 1001 states have internal predecessors, (1283), 479 states have call successors, (479), 119 states have call predecessors, (479), 118 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) [2022-11-23 15:47:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 15:47:17,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:17,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:47:17,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:17,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:17,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1875560173, now seen corresponding path program 1 times [2022-11-23 15:47:17,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:17,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884310826] [2022-11-23 15:47:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:17,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:19,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:19,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884310826] [2022-11-23 15:47:19,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884310826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:19,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:19,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614715384] [2022-11-23 15:47:19,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:19,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:19,170 INFO L87 Difference]: Start difference. First operand has 1560 states, 961 states have (on average 1.3350676378772113) internal successors, (1283), 1001 states have internal predecessors, (1283), 479 states have call successors, (479), 119 states have call predecessors, (479), 118 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 15:47:23,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:23,363 INFO L93 Difference]: Finished difference Result 4648 states and 6718 transitions. [2022-11-23 15:47:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:23,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 38 [2022-11-23 15:47:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:23,402 INFO L225 Difference]: With dead ends: 4648 [2022-11-23 15:47:23,402 INFO L226 Difference]: Without dead ends: 3017 [2022-11-23 15:47:23,416 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 [2022-11-23 15:47:23,419 INFO L413 NwaCegarLoop]: 2515 mSDtfsCounter, 2172 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 4490 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:23,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 4490 Invalid, 495 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 15:47:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-11-23 15:47:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 3009. [2022-11-23 15:47:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 1848 states have (on average 1.300865800865801) internal successors, (2404), 1896 states have internal predecessors, (2404), 926 states have call successors, (926), 235 states have call predecessors, (926), 234 states have return successors, (913), 909 states have call predecessors, (913), 913 states have call successors, (913) [2022-11-23 15:47:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 4243 transitions. [2022-11-23 15:47:23,659 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 4243 transitions. Word has length 38 [2022-11-23 15:47:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:23,660 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 4243 transitions. [2022-11-23 15:47:23,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 15:47:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 4243 transitions. [2022-11-23 15:47:23,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 15:47:23,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:23,665 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:47:23,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:47:23,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:23,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash 771975806, now seen corresponding path program 1 times [2022-11-23 15:47:23,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:23,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311093894] [2022-11-23 15:47:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:47:24,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:24,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311093894] [2022-11-23 15:47:24,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311093894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:24,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:24,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:24,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068183977] [2022-11-23 15:47:24,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:24,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:24,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:24,531 INFO L87 Difference]: Start difference. First operand 3009 states and 4243 transitions. 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:26,877 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 [] [2022-11-23 15:47:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:27,922 INFO L93 Difference]: Finished difference Result 3011 states and 4244 transitions. [2022-11-23 15:47:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:27,923 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2022-11-23 15:47:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:27,944 INFO L225 Difference]: With dead ends: 3011 [2022-11-23 15:47:27,944 INFO L226 Difference]: Without dead ends: 3008 [2022-11-23 15:47:27,948 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 [2022-11-23 15:47:27,949 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 2119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:27,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 1906 Invalid, 235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 15:47:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-11-23 15:47:28,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-11-23 15:47:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 1848 states have (on average 1.3003246753246753) internal successors, (2403), 1895 states have internal predecessors, (2403), 925 states have call successors, (925), 235 states have call predecessors, (925), 234 states have return successors, (913), 909 states have call predecessors, (913), 913 states have call successors, (913) [2022-11-23 15:47:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4241 transitions. [2022-11-23 15:47:28,125 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4241 transitions. Word has length 52 [2022-11-23 15:47:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:28,126 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4241 transitions. [2022-11-23 15:47:28,127 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:28,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4241 transitions. [2022-11-23 15:47:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 15:47:28,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:28,134 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:47:28,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:47:28,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1839407578, now seen corresponding path program 1 times [2022-11-23 15:47:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:28,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820382492] [2022-11-23 15:47:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:47:28,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:28,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820382492] [2022-11-23 15:47:28,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820382492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:28,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:28,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421922224] [2022-11-23 15:47:28,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:28,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:28,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:28,869 INFO L87 Difference]: Start difference. First operand 3008 states and 4241 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:30,932 INFO L93 Difference]: Finished difference Result 3010 states and 4242 transitions. [2022-11-23 15:47:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:30,933 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-11-23 15:47:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:30,955 INFO L225 Difference]: With dead ends: 3010 [2022-11-23 15:47:30,956 INFO L226 Difference]: Without dead ends: 3007 [2022-11-23 15:47:30,958 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 [2022-11-23 15:47:30,963 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 2116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:30,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 1904 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 15:47:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2022-11-23 15:47:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2022-11-23 15:47:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1848 states have (on average 1.2997835497835497) internal successors, (2402), 1894 states have internal predecessors, (2402), 924 states have call successors, (924), 235 states have call predecessors, (924), 234 states have return successors, (913), 909 states have call predecessors, (913), 913 states have call successors, (913) [2022-11-23 15:47:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4239 transitions. [2022-11-23 15:47:31,249 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4239 transitions. Word has length 53 [2022-11-23 15:47:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:31,250 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4239 transitions. [2022-11-23 15:47:31,250 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4239 transitions. [2022-11-23 15:47:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 15:47:31,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:31,253 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:47:31,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:47:31,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:31,254 INFO L85 PathProgramCache]: Analyzing trace with hash -250071829, now seen corresponding path program 1 times [2022-11-23 15:47:31,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:31,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366893120] [2022-11-23 15:47:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:31,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:47:31,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:31,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366893120] [2022-11-23 15:47:31,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366893120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:31,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:31,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:31,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283635431] [2022-11-23 15:47:31,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:31,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:31,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:31,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:31,994 INFO L87 Difference]: Start difference. First operand 3007 states and 4239 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:47:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:35,201 INFO L93 Difference]: Finished difference Result 7454 states and 10506 transitions. [2022-11-23 15:47:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2022-11-23 15:47:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:35,231 INFO L225 Difference]: With dead ends: 7454 [2022-11-23 15:47:35,231 INFO L226 Difference]: Without dead ends: 4452 [2022-11-23 15:47:35,246 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 [2022-11-23 15:47:35,250 INFO L413 NwaCegarLoop]: 2351 mSDtfsCounter, 2075 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:35,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 4248 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 15:47:35,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2022-11-23 15:47:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4431. [2022-11-23 15:47:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 2722 states have (on average 1.2997795738427627) internal successors, (3538), 2787 states have internal predecessors, (3538), 1360 states have call successors, (1360), 349 states have call predecessors, (1360), 348 states have return successors, (1349), 1342 states have call predecessors, (1349), 1349 states have call successors, (1349) [2022-11-23 15:47:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 6247 transitions. [2022-11-23 15:47:35,551 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 6247 transitions. Word has length 56 [2022-11-23 15:47:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:35,552 INFO L495 AbstractCegarLoop]: Abstraction has 4431 states and 6247 transitions. [2022-11-23 15:47:35,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:47:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 6247 transitions. [2022-11-23 15:47:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 15:47:35,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:35,555 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:47:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:47:35,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1187908991, now seen corresponding path program 1 times [2022-11-23 15:47:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:35,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703849556] [2022-11-23 15:47:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:35,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:47:36,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:36,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703849556] [2022-11-23 15:47:36,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703849556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:36,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:36,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178099948] [2022-11-23 15:47:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:36,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:36,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:36,281 INFO L87 Difference]: Start difference. First operand 4431 states and 6247 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:38,377 INFO L93 Difference]: Finished difference Result 4441 states and 6252 transitions. [2022-11-23 15:47:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:38,377 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-11-23 15:47:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:38,405 INFO L225 Difference]: With dead ends: 4441 [2022-11-23 15:47:38,405 INFO L226 Difference]: Without dead ends: 4437 [2022-11-23 15:47:38,409 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 [2022-11-23 15:47:38,410 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 2088 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:38,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 1917 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 15:47:38,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4437 states. [2022-11-23 15:47:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4437 to 4435. [2022-11-23 15:47:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4435 states, 2725 states have (on average 1.2979816513761468) internal successors, (3537), 2788 states have internal predecessors, (3537), 1358 states have call successors, (1358), 352 states have call predecessors, (1358), 351 states have return successors, (1349), 1342 states have call predecessors, (1349), 1349 states have call successors, (1349) [2022-11-23 15:47:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4435 states to 4435 states and 6244 transitions. [2022-11-23 15:47:38,708 INFO L78 Accepts]: Start accepts. Automaton has 4435 states and 6244 transitions. Word has length 54 [2022-11-23 15:47:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:38,709 INFO L495 AbstractCegarLoop]: Abstraction has 4435 states and 6244 transitions. [2022-11-23 15:47:38,709 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4435 states and 6244 transitions. [2022-11-23 15:47:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 15:47:38,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:38,712 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:47:38,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:47:38,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:38,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1828682889, now seen corresponding path program 1 times [2022-11-23 15:47:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:38,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331342719] [2022-11-23 15:47:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:38,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:47:39,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:39,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331342719] [2022-11-23 15:47:39,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331342719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:39,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:39,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:39,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715389019] [2022-11-23 15:47:39,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:39,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:39,422 INFO L87 Difference]: Start difference. First operand 4435 states and 6244 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:42,677 INFO L93 Difference]: Finished difference Result 8679 states and 12291 transitions. [2022-11-23 15:47:42,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:42,678 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-11-23 15:47:42,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:42,738 INFO L225 Difference]: With dead ends: 8679 [2022-11-23 15:47:42,738 INFO L226 Difference]: Without dead ends: 8675 [2022-11-23 15:47:42,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:42,747 INFO L413 NwaCegarLoop]: 2414 mSDtfsCounter, 2035 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:42,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 4307 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 15:47:42,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8675 states. [2022-11-23 15:47:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8675 to 8670. [2022-11-23 15:47:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8670 states, 5333 states have (on average 1.296643540221264) internal successors, (6915), 5445 states have internal predecessors, (6915), 2639 states have call successors, (2639), 698 states have call predecessors, (2639), 697 states have return successors, (2726), 2616 states have call predecessors, (2726), 2630 states have call successors, (2726) [2022-11-23 15:47:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 12280 transitions. [2022-11-23 15:47:43,481 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 12280 transitions. Word has length 55 [2022-11-23 15:47:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:43,481 INFO L495 AbstractCegarLoop]: Abstraction has 8670 states and 12280 transitions. [2022-11-23 15:47:43,482 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 12280 transitions. [2022-11-23 15:47:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 15:47:43,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:43,483 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:47:43,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:47:43,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:43,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:43,484 INFO L85 PathProgramCache]: Analyzing trace with hash 853755524, now seen corresponding path program 1 times [2022-11-23 15:47:43,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:43,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003457733] [2022-11-23 15:47:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:43,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:47:44,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:44,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003457733] [2022-11-23 15:47:44,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003457733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:44,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:44,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:44,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058824117] [2022-11-23 15:47:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:44,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:44,141 INFO L87 Difference]: Start difference. First operand 8670 states and 12280 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:45,628 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 [] [2022-11-23 15:47:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:47,523 INFO L93 Difference]: Finished difference Result 8672 states and 12281 transitions. [2022-11-23 15:47:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:47,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-11-23 15:47:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:47,583 INFO L225 Difference]: With dead ends: 8672 [2022-11-23 15:47:47,583 INFO L226 Difference]: Without dead ends: 8669 [2022-11-23 15:47:47,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:47,589 INFO L413 NwaCegarLoop]: 1898 mSDtfsCounter, 2107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2107 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:47,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2107 Valid, 1898 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 15:47:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2022-11-23 15:47:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 8669. [2022-11-23 15:47:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8669 states, 5333 states have (on average 1.2964560285017814) internal successors, (6914), 5444 states have internal predecessors, (6914), 2638 states have call successors, (2638), 698 states have call predecessors, (2638), 697 states have return successors, (2726), 2616 states have call predecessors, (2726), 2630 states have call successors, (2726) [2022-11-23 15:47:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 12278 transitions. [2022-11-23 15:47:48,310 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 12278 transitions. Word has length 56 [2022-11-23 15:47:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:48,310 INFO L495 AbstractCegarLoop]: Abstraction has 8669 states and 12278 transitions. [2022-11-23 15:47:48,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 12278 transitions. [2022-11-23 15:47:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 15:47:48,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:48,312 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:47:48,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:47:48,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash 695783148, now seen corresponding path program 1 times [2022-11-23 15:47:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:48,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661878553] [2022-11-23 15:47:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:47:48,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:48,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661878553] [2022-11-23 15:47:48,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661878553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:48,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:48,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:48,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759697381] [2022-11-23 15:47:48,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:48,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:48,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:48,936 INFO L87 Difference]: Start difference. First operand 8669 states and 12278 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:53,023 INFO L93 Difference]: Finished difference Result 14475 states and 20492 transitions. [2022-11-23 15:47:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:53,023 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2022-11-23 15:47:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:53,105 INFO L225 Difference]: With dead ends: 14475 [2022-11-23 15:47:53,105 INFO L226 Difference]: Without dead ends: 14471 [2022-11-23 15:47:53,116 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 [2022-11-23 15:47:53,118 INFO L413 NwaCegarLoop]: 2353 mSDtfsCounter, 2086 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 4235 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:53,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 4235 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 15:47:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14471 states. [2022-11-23 15:47:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14471 to 14443. [2022-11-23 15:47:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14443 states, 8893 states have (on average 1.2966378050151806) internal successors, (11531), 9072 states have internal predecessors, (11531), 4388 states have call successors, (4388), 1164 states have call predecessors, (4388), 1161 states have return successors, (4540), 4356 states have call predecessors, (4540), 4380 states have call successors, (4540) [2022-11-23 15:47:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14443 states to 14443 states and 20459 transitions. [2022-11-23 15:47:54,204 INFO L78 Accepts]: Start accepts. Automaton has 14443 states and 20459 transitions. Word has length 57 [2022-11-23 15:47:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:54,206 INFO L495 AbstractCegarLoop]: Abstraction has 14443 states and 20459 transitions. [2022-11-23 15:47:54,206 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 14443 states and 20459 transitions. [2022-11-23 15:47:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 15:47:54,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:54,208 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:47:54,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:47:54,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:54,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash 93611655, now seen corresponding path program 1 times [2022-11-23 15:47:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:54,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984977944] [2022-11-23 15:47:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:54,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:47:54,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:54,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984977944] [2022-11-23 15:47:54,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984977944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:54,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:54,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094198737] [2022-11-23 15:47:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:54,773 INFO L87 Difference]: Start difference. First operand 14443 states and 20459 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:57,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:57,600 INFO L93 Difference]: Finished difference Result 14445 states and 20460 transitions. [2022-11-23 15:47:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:57,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-11-23 15:47:57,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:57,675 INFO L225 Difference]: With dead ends: 14445 [2022-11-23 15:47:57,675 INFO L226 Difference]: Without dead ends: 14434 [2022-11-23 15:47:57,687 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 [2022-11-23 15:47:57,687 INFO L413 NwaCegarLoop]: 1897 mSDtfsCounter, 2103 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:57,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 1897 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 15:47:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14434 states. [2022-11-23 15:47:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14434 to 14434. [2022-11-23 15:47:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14434 states, 8885 states have (on average 1.2963421496904897) internal successors, (11518), 9063 states have internal predecessors, (11518), 4387 states have call successors, (4387), 1164 states have call predecessors, (4387), 1161 states have return successors, (4540), 4356 states have call predecessors, (4540), 4380 states have call successors, (4540) [2022-11-23 15:47:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14434 states to 14434 states and 20445 transitions. [2022-11-23 15:47:59,103 INFO L78 Accepts]: Start accepts. Automaton has 14434 states and 20445 transitions. Word has length 58 [2022-11-23 15:47:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:59,103 INFO L495 AbstractCegarLoop]: Abstraction has 14434 states and 20445 transitions. [2022-11-23 15:47:59,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 15:47:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 14434 states and 20445 transitions. [2022-11-23 15:47:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 15:47:59,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:59,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:47:59,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:47:59,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1125842403, now seen corresponding path program 1 times [2022-11-23 15:47:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001340845] [2022-11-23 15:47:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:59,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:59,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001340845] [2022-11-23 15:47:59,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001340845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:59,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:59,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81998431] [2022-11-23 15:47:59,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:59,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:59,703 INFO L87 Difference]: Start difference. First operand 14434 states and 20445 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 15:48:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:04,333 INFO L93 Difference]: Finished difference Result 36324 states and 51273 transitions. [2022-11-23 15:48:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:48:04,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2022-11-23 15:48:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:04,446 INFO L225 Difference]: With dead ends: 36324 [2022-11-23 15:48:04,446 INFO L226 Difference]: Without dead ends: 21895 [2022-11-23 15:48:04,519 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 [2022-11-23 15:48:04,520 INFO L413 NwaCegarLoop]: 2404 mSDtfsCounter, 1517 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4256 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:04,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 4256 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-23 15:48:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21895 states. [2022-11-23 15:48:05,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21895 to 21848. [2022-11-23 15:48:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21848 states, 13506 states have (on average 1.2950540500518288) internal successors, (17491), 13798 states have internal predecessors, (17491), 6523 states have call successors, (6523), 1823 states have call predecessors, (6523), 1818 states have return successors, (6764), 6476 states have call predecessors, (6764), 6516 states have call successors, (6764) [2022-11-23 15:48:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21848 states to 21848 states and 30778 transitions. [2022-11-23 15:48:06,049 INFO L78 Accepts]: Start accepts. Automaton has 21848 states and 30778 transitions. Word has length 86 [2022-11-23 15:48:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:06,050 INFO L495 AbstractCegarLoop]: Abstraction has 21848 states and 30778 transitions. [2022-11-23 15:48:06,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 15:48:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 21848 states and 30778 transitions. [2022-11-23 15:48:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 15:48:06,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:06,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:48:06,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:48:06,070 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:06,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1465284768, now seen corresponding path program 1 times [2022-11-23 15:48:06,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:06,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129735221] [2022-11-23 15:48:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:06,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 15:48:08,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:08,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129735221] [2022-11-23 15:48:08,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129735221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:08,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:08,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:48:08,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545506172] [2022-11-23 15:48:08,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:08,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:48:08,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:08,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:48:08,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:48:08,216 INFO L87 Difference]: Start difference. First operand 21848 states and 30778 transitions. Second operand has 6 states, 4 states have (on average 12.5) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:48:12,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:14,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:19,308 INFO L93 Difference]: Finished difference Result 43796 states and 61722 transitions. [2022-11-23 15:48:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:48:19,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 12.5) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 101 [2022-11-23 15:48:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:19,417 INFO L225 Difference]: With dead ends: 43796 [2022-11-23 15:48:19,417 INFO L226 Difference]: Without dead ends: 21911 [2022-11-23 15:48:19,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:48:19,520 INFO L413 NwaCegarLoop]: 1888 mSDtfsCounter, 7 mSDsluCounter, 7534 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9422 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:19,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9422 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-23 15:48:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21911 states. [2022-11-23 15:48:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21911 to 21903. [2022-11-23 15:48:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 13544 states have (on average 1.2960720614294152) internal successors, (17554), 13845 states have internal predecessors, (17554), 6523 states have call successors, (6523), 1831 states have call predecessors, (6523), 1835 states have return successors, (6789), 6476 states have call predecessors, (6789), 6516 states have call successors, (6789) [2022-11-23 15:48:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 30866 transitions. [2022-11-23 15:48:21,199 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 30866 transitions. Word has length 101 [2022-11-23 15:48:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:21,200 INFO L495 AbstractCegarLoop]: Abstraction has 21903 states and 30866 transitions. [2022-11-23 15:48:21,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 12.5) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:48:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 30866 transitions. [2022-11-23 15:48:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 15:48:21,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:21,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:48:21,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:48:21,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:21,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1012187692, now seen corresponding path program 1 times [2022-11-23 15:48:21,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:21,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528723169] [2022-11-23 15:48:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 15:48:24,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528723169] [2022-11-23 15:48:24,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528723169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:48:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896595685] [2022-11-23 15:48:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:24,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:24,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:24,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:48:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:26,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 8014 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:48:26,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:48:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-23 15:48:26,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:48:26,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896595685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:26,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:48:26,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-23 15:48:26,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394741369] [2022-11-23 15:48:26,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:26,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:48:26,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:48:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:48:26,639 INFO L87 Difference]: Start difference. First operand 21903 states and 30866 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:48:32,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:35,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:37,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:43,290 INFO L93 Difference]: Finished difference Result 21930 states and 30892 transitions. [2022-11-23 15:48:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:48:43,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-11-23 15:48:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:43,390 INFO L225 Difference]: With dead ends: 21930 [2022-11-23 15:48:43,391 INFO L226 Difference]: Without dead ends: 21927 [2022-11-23 15:48:43,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:48:43,403 INFO L413 NwaCegarLoop]: 2509 mSDtfsCounter, 398 mSDsluCounter, 8504 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 11013 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:43,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 11013 Invalid, 2446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-11-23 15:48:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21927 states. [2022-11-23 15:48:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21927 to 21926. [2022-11-23 15:48:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21926 states, 13560 states have (on average 1.2960176991150443) internal successors, (17574), 13860 states have internal predecessors, (17574), 6522 states have call successors, (6522), 1839 states have call predecessors, (6522), 1843 states have return successors, (6789), 6476 states have call predecessors, (6789), 6516 states have call successors, (6789) [2022-11-23 15:48:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21926 states to 21926 states and 30885 transitions. [2022-11-23 15:48:44,902 INFO L78 Accepts]: Start accepts. Automaton has 21926 states and 30885 transitions. Word has length 102 [2022-11-23 15:48:44,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:44,903 INFO L495 AbstractCegarLoop]: Abstraction has 21926 states and 30885 transitions. [2022-11-23 15:48:44,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 15:48:44,903 INFO L276 IsEmpty]: Start isEmpty. Operand 21926 states and 30885 transitions. [2022-11-23 15:48:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 15:48:44,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:44,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:48:44,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:48:45,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:45,137 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash 978019961, now seen corresponding path program 1 times [2022-11-23 15:48:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:45,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123351836] [2022-11-23 15:48:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:48:46,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:46,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123351836] [2022-11-23 15:48:46,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123351836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:46,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:46,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:48:46,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335289586] [2022-11-23 15:48:46,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:46,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:48:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:48:46,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:46,053 INFO L87 Difference]: Start difference. First operand 21926 states and 30885 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:48:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:50,717 INFO L93 Difference]: Finished difference Result 50998 states and 71740 transitions. [2022-11-23 15:48:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:48:50,718 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2022-11-23 15:48:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:50,824 INFO L225 Difference]: With dead ends: 50998 [2022-11-23 15:48:50,824 INFO L226 Difference]: Without dead ends: 31103 [2022-11-23 15:48:50,895 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 [2022-11-23 15:48:50,895 INFO L413 NwaCegarLoop]: 3294 mSDtfsCounter, 1944 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:50,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 4877 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 15:48:50,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31103 states. [2022-11-23 15:48:52,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31103 to 31078. [2022-11-23 15:48:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31078 states, 19301 states have (on average 1.2940780270452308) internal successors, (24977), 19725 states have internal predecessors, (24977), 9100 states have call successors, (9100), 2670 states have call predecessors, (9100), 2676 states have return successors, (9467), 9036 states have call predecessors, (9467), 9094 states have call successors, (9467) [2022-11-23 15:48:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31078 states to 31078 states and 43544 transitions. [2022-11-23 15:48:52,910 INFO L78 Accepts]: Start accepts. Automaton has 31078 states and 43544 transitions. Word has length 112 [2022-11-23 15:48:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:52,911 INFO L495 AbstractCegarLoop]: Abstraction has 31078 states and 43544 transitions. [2022-11-23 15:48:52,911 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:48:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 31078 states and 43544 transitions. [2022-11-23 15:48:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 15:48:52,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:52,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:48:52,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:48:52,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:52,925 INFO L85 PathProgramCache]: Analyzing trace with hash -434860047, now seen corresponding path program 1 times [2022-11-23 15:48:52,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:52,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986310472] [2022-11-23 15:48:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:52,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-23 15:48:55,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:55,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986310472] [2022-11-23 15:48:55,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986310472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:55,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:55,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 15:48:55,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857542730] [2022-11-23 15:48:55,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:55,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:48:55,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:55,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:48:55,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:48:55,619 INFO L87 Difference]: Start difference. First operand 31078 states and 43544 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:48:59,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:00,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:07,596 INFO L93 Difference]: Finished difference Result 31080 states and 43545 transitions. [2022-11-23 15:49:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:49:07,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 113 [2022-11-23 15:49:07,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:07,688 INFO L225 Difference]: With dead ends: 31080 [2022-11-23 15:49:07,688 INFO L226 Difference]: Without dead ends: 31069 [2022-11-23 15:49:07,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:49:07,699 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 3352 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 2303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 4388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2303 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:07,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3498 Valid, 1189 Invalid, 4388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2303 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-23 15:49:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31069 states. [2022-11-23 15:49:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31069 to 31016. [2022-11-23 15:49:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31016 states, 19259 states have (on average 1.293992419128719) internal successors, (24921), 19687 states have internal predecessors, (24921), 9086 states have call successors, (9086), 2658 states have call predecessors, (9086), 2670 states have return successors, (9455), 9024 states have call predecessors, (9455), 9082 states have call successors, (9455) [2022-11-23 15:49:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31016 states to 31016 states and 43462 transitions. [2022-11-23 15:49:09,710 INFO L78 Accepts]: Start accepts. Automaton has 31016 states and 43462 transitions. Word has length 113 [2022-11-23 15:49:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:09,711 INFO L495 AbstractCegarLoop]: Abstraction has 31016 states and 43462 transitions. [2022-11-23 15:49:09,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:49:09,711 INFO L276 IsEmpty]: Start isEmpty. Operand 31016 states and 43462 transitions. [2022-11-23 15:49:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 15:49:09,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:09,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:49:09,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:49:09,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:09,728 INFO L85 PathProgramCache]: Analyzing trace with hash -219186696, now seen corresponding path program 1 times [2022-11-23 15:49:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:09,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174897058] [2022-11-23 15:49:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:10,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:10,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174897058] [2022-11-23 15:49:10,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:49:10,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891486032] [2022-11-23 15:49:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:10,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:49:10,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:49:10,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:49:10,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:49:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:12,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 8438 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:49:12,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:49:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 15:49:12,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:49:12,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891486032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:12,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:49:12,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:49:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803128133] [2022-11-23 15:49:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:12,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:49:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:49:12,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:49:12,469 INFO L87 Difference]: Start difference. First operand 31016 states and 43462 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-23 15:49:18,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:18,629 INFO L93 Difference]: Finished difference Result 79794 states and 111367 transitions. [2022-11-23 15:49:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:49:18,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 140 [2022-11-23 15:49:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:18,787 INFO L225 Difference]: With dead ends: 79794 [2022-11-23 15:49:18,787 INFO L226 Difference]: Without dead ends: 48779 [2022-11-23 15:49:18,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:49:18,873 INFO L413 NwaCegarLoop]: 2401 mSDtfsCounter, 1760 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:18,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 4207 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 15:49:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48779 states. [2022-11-23 15:49:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48779 to 48552. [2022-11-23 15:49:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48552 states, 30384 states have (on average 1.2879805160610849) internal successors, (39134), 31063 states have internal predecessors, (39134), 13853 states have call successors, (13853), 4307 states have call predecessors, (13853), 4314 states have return successors, (14281), 13716 states have call predecessors, (14281), 13849 states have call successors, (14281) [2022-11-23 15:49:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48552 states to 48552 states and 67268 transitions. [2022-11-23 15:49:22,337 INFO L78 Accepts]: Start accepts. Automaton has 48552 states and 67268 transitions. Word has length 140 [2022-11-23 15:49:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:22,338 INFO L495 AbstractCegarLoop]: Abstraction has 48552 states and 67268 transitions. [2022-11-23 15:49:22,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-23 15:49:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 48552 states and 67268 transitions. [2022-11-23 15:49:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 15:49:22,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:22,346 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:22,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 15:49:22,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e462bb-ec1d-45d0-8949-80f79fa4de11/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:49:22,559 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash -113484040, now seen corresponding path program 1 times [2022-11-23 15:49:22,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:22,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534645636] [2022-11-23 15:49:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-23 15:49:23,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:23,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534645636] [2022-11-23 15:49:23,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534645636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:23,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:49:23,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:49:23,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861074666] [2022-11-23 15:49:23,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:23,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:49:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:23,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:49:23,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:49:23,430 INFO L87 Difference]: Start difference. First operand 48552 states and 67268 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:49:24,963 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 []