./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS --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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- 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-8393723 [2022-11-19 06:33:08,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:33:08,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:33:08,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:33:08,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:33:08,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:33:08,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:33:08,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:33:08,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:33:08,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:33:08,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:33:08,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:33:08,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:33:08,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:33:08,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:33:08,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:33:08,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:33:08,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:33:08,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:33:08,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:33:08,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:33:08,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:33:08,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:33:08,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:33:08,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:33:08,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:33:08,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:33:08,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:33:08,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:33:08,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:33:08,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:33:08,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:33:08,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:33:08,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:33:08,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:33:08,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:33:08,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:33:08,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:33:08,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:33:08,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:33:08,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:33:08,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:33:08,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:33:08,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:33:08,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:33:08,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:33:08,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:33:08,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:33:08,874 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:33:08,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:33:08,875 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:33:08,875 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:33:08,876 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:33:08,876 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:33:08,876 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:33:08,877 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:33:08,877 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:33:08,877 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:33:08,877 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:33:08,878 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:33:08,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:33:08,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:33:08,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:33:08,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:33:08,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:33:08,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:33:08,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:33:08,880 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:33:08,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:33:08,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:33:08,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:33:08,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:08,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:33:08,883 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:33:08,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:33:08,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:33:08,884 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:33:08,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:33:08,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:33:08,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:33:08,884 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2022-11-19 06:33:09,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:33:09,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:33:09,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:33:09,263 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:33:09,264 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:33:09,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-19 06:33:09,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data/1bc915c09/b54ae069de9741f6aae2da60c0c21ec8/FLAG8e7315800 [2022-11-19 06:33:10,403 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:33:10,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-19 06:33:10,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data/1bc915c09/b54ae069de9741f6aae2da60c0c21ec8/FLAG8e7315800 [2022-11-19 06:33:10,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data/1bc915c09/b54ae069de9741f6aae2da60c0c21ec8 [2022-11-19 06:33:10,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:33:10,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:33:10,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:10,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:33:10,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:33:10,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:10" (1/1) ... [2022-11-19 06:33:10,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ad92a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:10, skipping insertion in model container [2022-11-19 06:33:10,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:10" (1/1) ... [2022-11-19 06:33:10,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:33:10,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:33:11,616 WARN L234 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-19 06:33:12,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:12,469 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:33:12,582 WARN L234 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-19 06:33:12,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:13,002 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:33:13,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13 WrapperNode [2022-11-19 06:33:13,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:13,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:13,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:33:13,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:33:13,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,297 INFO L138 Inliner]: procedures = 184, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3178 [2022-11-19 06:33:13,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:13,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:33:13,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:33:13,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:33:13,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:33:13,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:33:13,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:33:13,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:33:13,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (1/1) ... [2022-11-19 06:33:13,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:13,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:33:13,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:33:13,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:33:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-19 06:33:13,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-19 06:33:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-19 06:33:13,612 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-19 06:33:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:33:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-19 06:33:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-19 06:33:13,613 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-19 06:33:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:33:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:33:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:33:13,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:33:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:33:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:33:13,614 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:33:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 06:33:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 06:33:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-19 06:33:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-19 06:33:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:33:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 06:33:13,616 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 06:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:33:13,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:33:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 06:33:13,617 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 06:33:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-19 06:33:13,617 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-19 06:33:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:33:13,618 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:33:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-19 06:33:13,618 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-19 06:33:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:33:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:33:13,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:33:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:33:13,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:33:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 06:33:13,619 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 06:33:13,620 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:33:13,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:33:13,620 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 06:33:13,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 06:33:13,620 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-19 06:33:13,621 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-19 06:33:13,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:33:13,621 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-19 06:33:13,621 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-19 06:33:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-19 06:33:13,622 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-19 06:33:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-19 06:33:13,622 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-19 06:33:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:33:13,623 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 06:33:13,623 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 06:33:13,623 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-19 06:33:13,623 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-19 06:33:13,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:33:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:33:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:33:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-19 06:33:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-19 06:33:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-19 06:33:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-19 06:33:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:33:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:33:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-19 06:33:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-19 06:33:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:33:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 06:33:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 06:33:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 06:33:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 06:33:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 06:33:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 06:33:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-19 06:33:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-19 06:33:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-19 06:33:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-19 06:33:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:33:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-19 06:33:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-19 06:33:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:33:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-19 06:33:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-19 06:33:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 06:33:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 06:33:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-19 06:33:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-19 06:33:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 06:33:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 06:33:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 06:33:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 06:33:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-19 06:33:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-19 06:33:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-19 06:33:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-19 06:33:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:33:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:33:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:33:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:33:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 06:33:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 06:33:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 06:33:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 06:33:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:33:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-19 06:33:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-19 06:33:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-19 06:33:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-19 06:33:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 06:33:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 06:33:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:33:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 06:33:13,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 06:33:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:33:13,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:33:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-19 06:33:13,647 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-19 06:33:13,652 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-19 06:33:13,652 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-19 06:33:14,371 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:33:14,378 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:33:14,689 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:33:18,201 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:33:19,485 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:33:19,486 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:33:19,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:19 BoogieIcfgContainer [2022-11-19 06:33:19,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:33:19,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:33:19,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:33:19,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:33:19,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:33:10" (1/3) ... [2022-11-19 06:33:19,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20459ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:19, skipping insertion in model container [2022-11-19 06:33:19,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:13" (2/3) ... [2022-11-19 06:33:19,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20459ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:19, skipping insertion in model container [2022-11-19 06:33:19,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:19" (3/3) ... [2022-11-19 06:33:19,501 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-19 06:33:19,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:33:19,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:33:19,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:33:19,611 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;@5f5decc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:33:19,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:33:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 770 states, 488 states have (on average 1.4057377049180328) internal successors, (686), 521 states have internal predecessors, (686), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-19 06:33:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 06:33:19,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:19,657 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:19,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash 337694715, now seen corresponding path program 1 times [2022-11-19 06:33:19,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:19,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718516612] [2022-11-19 06:33:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:19,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-19 06:33:20,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:20,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718516612] [2022-11-19 06:33:20,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718516612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:20,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:20,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:33:20,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413385719] [2022-11-19 06:33:20,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:20,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:20,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:20,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:20,236 INFO L87 Difference]: Start difference. First operand has 770 states, 488 states have (on average 1.4057377049180328) internal successors, (686), 521 states have internal predecessors, (686), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 06:33:22,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:23,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:23,496 INFO L93 Difference]: Finished difference Result 1966 states and 2884 transitions. [2022-11-19 06:33:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:33:23,502 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2022-11-19 06:33:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:23,532 INFO L225 Difference]: With dead ends: 1966 [2022-11-19 06:33:23,532 INFO L226 Difference]: Without dead ends: 1149 [2022-11-19 06:33:23,542 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 [2022-11-19 06:33:23,545 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 637 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:23,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 2085 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 06:33:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-11-19 06:33:23,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1148. [2022-11-19 06:33:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 727 states have (on average 1.37414030261348) internal successors, (999), 760 states have internal predecessors, (999), 333 states have call successors, (333), 89 states have call predecessors, (333), 87 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-19 06:33:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1664 transitions. [2022-11-19 06:33:23,771 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1664 transitions. Word has length 60 [2022-11-19 06:33:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:23,772 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1664 transitions. [2022-11-19 06:33:23,773 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 06:33:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1664 transitions. [2022-11-19 06:33:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 06:33:23,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:23,785 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:33:23,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:33:23,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash 910876853, now seen corresponding path program 1 times [2022-11-19 06:33:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:23,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183554102] [2022-11-19 06:33:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:23,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-19 06:33:24,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:24,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183554102] [2022-11-19 06:33:24,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183554102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:24,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:24,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:33:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709801372] [2022-11-19 06:33:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:24,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:33:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:33:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:33:24,246 INFO L87 Difference]: Start difference. First operand 1148 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:33:26,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:27,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:27,334 INFO L93 Difference]: Finished difference Result 2279 states and 3303 transitions. [2022-11-19 06:33:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:33:27,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2022-11-19 06:33:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:27,346 INFO L225 Difference]: With dead ends: 2279 [2022-11-19 06:33:27,346 INFO L226 Difference]: Without dead ends: 1148 [2022-11-19 06:33:27,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:33:27,354 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 1 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:27,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2860 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 06:33:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-11-19 06:33:27,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1148. [2022-11-19 06:33:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 727 states have (on average 1.3713892709766162) internal successors, (997), 760 states have internal predecessors, (997), 333 states have call successors, (333), 89 states have call predecessors, (333), 87 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-19 06:33:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1662 transitions. [2022-11-19 06:33:27,436 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1662 transitions. Word has length 94 [2022-11-19 06:33:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:27,437 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1662 transitions. [2022-11-19 06:33:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:33:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1662 transitions. [2022-11-19 06:33:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 06:33:27,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:27,443 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:33:27,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:33:27,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:27,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:27,445 INFO L85 PathProgramCache]: Analyzing trace with hash 906110173, now seen corresponding path program 1 times [2022-11-19 06:33:27,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:27,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010529234] [2022-11-19 06:33:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:27,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:33:27,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:27,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010529234] [2022-11-19 06:33:27,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010529234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:27,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:33:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857889355] [2022-11-19 06:33:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:33:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:33:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:33:27,888 INFO L87 Difference]: Start difference. First operand 1148 states and 1662 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 06:33:29,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:31,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:33,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:34,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:34,989 INFO L93 Difference]: Finished difference Result 1625 states and 2442 transitions. [2022-11-19 06:33:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:33:35,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 96 [2022-11-19 06:33:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:35,013 INFO L225 Difference]: With dead ends: 1625 [2022-11-19 06:33:35,013 INFO L226 Difference]: Without dead ends: 1622 [2022-11-19 06:33:35,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:33:35,017 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 607 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 141 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:35,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3630 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 458 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-11-19 06:33:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-11-19 06:33:35,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1150. [2022-11-19 06:33:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 729 states have (on average 1.3703703703703705) internal successors, (999), 762 states have internal predecessors, (999), 333 states have call successors, (333), 89 states have call predecessors, (333), 87 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-19 06:33:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1664 transitions. [2022-11-19 06:33:35,107 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1664 transitions. Word has length 96 [2022-11-19 06:33:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:35,110 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1664 transitions. [2022-11-19 06:33:35,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 06:33:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1664 transitions. [2022-11-19 06:33:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 06:33:35,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:35,118 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:33:35,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:33:35,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:35,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:35,120 INFO L85 PathProgramCache]: Analyzing trace with hash 23567692, now seen corresponding path program 1 times [2022-11-19 06:33:35,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:35,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229002472] [2022-11-19 06:33:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:35,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:33:35,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:35,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229002472] [2022-11-19 06:33:35,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229002472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:35,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:35,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:33:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705062741] [2022-11-19 06:33:35,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:35,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:33:35,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:35,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:33:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:33:35,647 INFO L87 Difference]: Start difference. First operand 1150 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 06:33:38,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:39,910 INFO L93 Difference]: Finished difference Result 2754 states and 4078 transitions. [2022-11-19 06:33:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:33:39,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-11-19 06:33:39,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:39,926 INFO L225 Difference]: With dead ends: 2754 [2022-11-19 06:33:39,926 INFO L226 Difference]: Without dead ends: 1625 [2022-11-19 06:33:39,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:33:39,935 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 1377 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:39,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1777 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 893 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-19 06:33:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2022-11-19 06:33:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1151. [2022-11-19 06:33:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 730 states have (on average 1.36986301369863) internal successors, (1000), 763 states have internal predecessors, (1000), 333 states have call successors, (333), 89 states have call predecessors, (333), 87 states have return successors, (332), 328 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-19 06:33:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1665 transitions. [2022-11-19 06:33:40,030 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1665 transitions. Word has length 104 [2022-11-19 06:33:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:40,030 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1665 transitions. [2022-11-19 06:33:40,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 06:33:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1665 transitions. [2022-11-19 06:33:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-19 06:33:40,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:40,041 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:33:40,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:33:40,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1586631208, now seen corresponding path program 1 times [2022-11-19 06:33:40,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:40,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589177600] [2022-11-19 06:33:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:40,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:33:40,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:40,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589177600] [2022-11-19 06:33:40,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589177600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:40,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:40,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:33:40,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119478553] [2022-11-19 06:33:40,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:40,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:33:40,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:40,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:33:40,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:33:40,380 INFO L87 Difference]: Start difference. First operand 1151 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:33:42,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:44,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:46,887 INFO L93 Difference]: Finished difference Result 2429 states and 3755 transitions. [2022-11-19 06:33:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:33:46,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-11-19 06:33:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:46,902 INFO L225 Difference]: With dead ends: 2429 [2022-11-19 06:33:46,902 INFO L226 Difference]: Without dead ends: 2426 [2022-11-19 06:33:46,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-19 06:33:46,905 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 1291 mSDsluCounter, 4192 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:46,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 5976 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 06:33:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2022-11-19 06:33:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1153. [2022-11-19 06:33:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 731 states have (on average 1.3693570451436388) internal successors, (1001), 763 states have internal predecessors, (1001), 334 states have call successors, (334), 89 states have call predecessors, (334), 87 states have return successors, (333), 329 states have call predecessors, (333), 333 states have call successors, (333) [2022-11-19 06:33:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1668 transitions. [2022-11-19 06:33:47,027 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1668 transitions. Word has length 105 [2022-11-19 06:33:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:47,029 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1668 transitions. [2022-11-19 06:33:47,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:33:47,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1668 transitions. [2022-11-19 06:33:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-19 06:33:47,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:47,036 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:33:47,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:33:47,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:47,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1245160345, now seen corresponding path program 1 times [2022-11-19 06:33:47,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:47,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531882887] [2022-11-19 06:33:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-19 06:33:47,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:47,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531882887] [2022-11-19 06:33:47,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531882887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:47,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:47,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:33:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234720787] [2022-11-19 06:33:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:47,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:47,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:47,309 INFO L87 Difference]: Start difference. First operand 1153 states and 1668 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:33:51,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:51,903 INFO L93 Difference]: Finished difference Result 2683 states and 3868 transitions. [2022-11-19 06:33:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:33:51,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2022-11-19 06:33:51,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:51,919 INFO L225 Difference]: With dead ends: 2683 [2022-11-19 06:33:51,919 INFO L226 Difference]: Without dead ends: 1551 [2022-11-19 06:33:51,924 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 [2022-11-19 06:33:51,925 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 1027 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:51,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1961 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-19 06:33:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-11-19 06:33:52,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1549. [2022-11-19 06:33:52,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 977 states have (on average 1.3623336745138177) internal successors, (1331), 1018 states have internal predecessors, (1331), 448 states have call successors, (448), 126 states have call predecessors, (448), 123 states have return successors, (447), 440 states have call predecessors, (447), 447 states have call successors, (447) [2022-11-19 06:33:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2226 transitions. [2022-11-19 06:33:52,122 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2226 transitions. Word has length 129 [2022-11-19 06:33:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:52,123 INFO L495 AbstractCegarLoop]: Abstraction has 1549 states and 2226 transitions. [2022-11-19 06:33:52,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:33:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2226 transitions. [2022-11-19 06:33:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 06:33:52,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:52,135 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:52,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:33:52,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:33:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:52,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1262499405, now seen corresponding path program 1 times [2022-11-19 06:33:52,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:52,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381278981] [2022-11-19 06:33:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:52,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-19 06:33:52,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:52,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381278981] [2022-11-19 06:33:52,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381278981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:52,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:52,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:33:52,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011777022] [2022-11-19 06:33:52,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:52,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:33:52,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:33:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:33:52,521 INFO L87 Difference]: Start difference. First operand 1549 states and 2226 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:33:53,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:56,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:00,810 INFO L93 Difference]: Finished difference Result 4109 states and 6202 transitions. [2022-11-19 06:34:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:34:00,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-11-19 06:34:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:00,829 INFO L225 Difference]: With dead ends: 4109 [2022-11-19 06:34:00,830 INFO L226 Difference]: Without dead ends: 2977 [2022-11-19 06:34:00,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:34:00,836 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 2521 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 362 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2622 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:00,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2622 Valid, 3730 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1640 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-19 06:34:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2022-11-19 06:34:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1552. [2022-11-19 06:34:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 980 states have (on average 1.3622448979591837) internal successors, (1335), 1021 states have internal predecessors, (1335), 448 states have call successors, (448), 126 states have call predecessors, (448), 123 states have return successors, (447), 440 states have call predecessors, (447), 447 states have call successors, (447) [2022-11-19 06:34:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2230 transitions. [2022-11-19 06:34:01,069 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2230 transitions. Word has length 131 [2022-11-19 06:34:01,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:01,070 INFO L495 AbstractCegarLoop]: Abstraction has 1552 states and 2230 transitions. [2022-11-19 06:34:01,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:34:01,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2230 transitions. [2022-11-19 06:34:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 06:34:01,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:01,080 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:01,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:34:01,080 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:34:01,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash 782035702, now seen corresponding path program 1 times [2022-11-19 06:34:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:01,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014652341] [2022-11-19 06:34:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-19 06:34:01,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:01,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014652341] [2022-11-19 06:34:01,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014652341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:34:01,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941311984] [2022-11-19 06:34:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:01,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:01,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:01,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:01,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:34:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:02,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:34:02,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:34:02,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-19 06:34:02,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941311984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:02,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1919130400] [2022-11-19 06:34:02,946 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-19 06:34:02,947 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:34:02,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:34:02,958 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:34:02,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:34:04,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:04,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:04,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:04,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-19 06:34:05,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:05,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:05,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:05,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-19 06:34:22,519 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 423 for LOIs [2022-11-19 06:34:23,416 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 136 for LOIs [2022-11-19 06:34:23,544 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 423 for LOIs [2022-11-19 06:34:23,744 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:36:29,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1919130400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:36:29,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:36:29,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [5, 4, 5] total 47 [2022-11-19 06:36:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071531342] [2022-11-19 06:36:29,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:36:29,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-19 06:36:29,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:36:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-19 06:36:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1897, Unknown=0, NotChecked=0, Total=2162 [2022-11-19 06:36:29,299 INFO L87 Difference]: Start difference. First operand 1552 states and 2230 transitions. Second operand has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-19 06:36:35,043 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 624 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:36:40,770 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 632 DAG size of output: 617 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:36:46,832 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 638 DAG size of output: 623 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:37:59,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:00,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:02,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:04,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:12,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:14,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:53,806 INFO L93 Difference]: Finished difference Result 3171 states and 4581 transitions. [2022-11-19 06:38:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-19 06:38:53,807 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 133 [2022-11-19 06:38:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:53,815 INFO L225 Difference]: With dead ends: 3171 [2022-11-19 06:38:53,815 INFO L226 Difference]: Without dead ends: 1634 [2022-11-19 06:38:53,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 187.5s TimeCoverageRelationStatistics Valid=453, Invalid=3707, Unknown=0, NotChecked=0, Total=4160 [2022-11-19 06:38:53,821 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 85 mSDsluCounter, 16115 mSDsCounter, 0 mSdLazyCounter, 10502 mSolverCounterSat, 136 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 17073 SdHoareTripleChecker+Invalid, 10641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 10502 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:53,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 17073 Invalid, 10641 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [136 Valid, 10502 Invalid, 3 Unknown, 0 Unchecked, 81.8s Time] [2022-11-19 06:38:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2022-11-19 06:38:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1593. [2022-11-19 06:38:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1011 states have (on average 1.358061325420376) internal successors, (1373), 1052 states have internal predecessors, (1373), 456 states have call successors, (456), 129 states have call predecessors, (456), 125 states have return successors, (468), 447 states have call predecessors, (468), 455 states have call successors, (468) [2022-11-19 06:38:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2297 transitions. [2022-11-19 06:38:54,139 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2297 transitions. Word has length 133 [2022-11-19 06:38:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:54,139 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2297 transitions. [2022-11-19 06:38:54,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-19 06:38:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2297 transitions. [2022-11-19 06:38:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-19 06:38:54,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:54,148 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:54,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:54,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:54,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1251163021, now seen corresponding path program 1 times [2022-11-19 06:38:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:54,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683707894] [2022-11-19 06:38:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-19 06:38:54,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:54,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683707894] [2022-11-19 06:38:54,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683707894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:54,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819488486] [2022-11-19 06:38:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:54,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:54,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:54,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:38:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:55,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:38:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:38:55,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-19 06:38:55,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819488486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:55,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [817970462] [2022-11-19 06:38:55,815 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2022-11-19 06:38:55,815 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:55,815 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:55,816 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:55,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:56,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 06:38:56,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 06:38:56,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:38:56,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:38:56,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:38:56,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:38:56,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-19 06:38:57,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:38:57,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:38:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:38:57,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-19 06:39:00,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 06:39:00,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 06:39:00,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 06:39:01,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 06:39:02,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 06:39:02,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 06:39:10,183 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 83 for LOIs [2022-11-19 06:39:10,312 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 677 for LOIs [2022-11-19 06:39:11,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 06:39:12,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:39:12,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 06:39:14,188 INFO L321 Elim1Store]: treesize reduction 324, result has 43.0 percent of original size [2022-11-19 06:39:14,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 352 disjoint index pairs (out of 351 index pairs), introduced 28 new quantified variables, introduced 27 case distinctions, treesize of input 1549 treesize of output 1741 [2022-11-19 06:39:14,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:39:14,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:39:14,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:39:14,605 INFO L321 Elim1Store]: treesize reduction 44, result has 45.7 percent of original size [2022-11-19 06:39:14,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1510 treesize of output 1517 [2022-11-19 06:39:16,755 INFO L321 Elim1Store]: treesize reduction 270, result has 63.0 percent of original size [2022-11-19 06:39:16,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 29 select indices, 29 select index equivalence classes, 379 disjoint index pairs (out of 406 index pairs), introduced 30 new quantified variables, introduced 54 case distinctions, treesize of input 1474 treesize of output 1883 [2022-11-19 06:40:49,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:40:49,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:40:49,386 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 06:40:49,390 INFO L158 Benchmark]: Toolchain (without parser) took 458561.01ms. Allocated memory was 123.7MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 75.1MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 969.8MB. Max. memory is 16.1GB. [2022-11-19 06:40:49,390 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory is still 101.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:40:49,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2172.93ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 75.0MB in the beginning and 68.7MB in the end (delta: 6.3MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2022-11-19 06:40:49,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 293.55ms. Allocated memory is still 153.1MB. Free memory was 68.7MB in the beginning and 91.6MB in the end (delta: -23.0MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-19 06:40:49,391 INFO L158 Benchmark]: Boogie Preprocessor took 211.42ms. Allocated memory is still 153.1MB. Free memory was 91.6MB in the beginning and 72.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-19 06:40:49,391 INFO L158 Benchmark]: RCFGBuilder took 5980.10ms. Allocated memory was 153.1MB in the beginning and 358.6MB in the end (delta: 205.5MB). Free memory was 72.7MB in the beginning and 232.8MB in the end (delta: -160.1MB). Peak memory consumption was 131.2MB. Max. memory is 16.1GB. [2022-11-19 06:40:49,391 INFO L158 Benchmark]: TraceAbstraction took 449895.95ms. Allocated memory was 358.6MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 232.8MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 889.7MB. Max. memory is 16.1GB. [2022-11-19 06:40:49,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory is still 101.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2172.93ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 75.0MB in the beginning and 68.7MB in the end (delta: 6.3MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 293.55ms. Allocated memory is still 153.1MB. Free memory was 68.7MB in the beginning and 91.6MB in the end (delta: -23.0MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 211.42ms. Allocated memory is still 153.1MB. Free memory was 91.6MB in the beginning and 72.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * RCFGBuilder took 5980.10ms. Allocated memory was 153.1MB in the beginning and 358.6MB in the end (delta: 205.5MB). Free memory was 72.7MB in the beginning and 232.8MB in the end (delta: -160.1MB). Peak memory consumption was 131.2MB. Max. memory is 16.1GB. * TraceAbstraction took 449895.95ms. Allocated memory was 358.6MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 232.8MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 889.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 06:40:49,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS --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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- 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-8393723 [2022-11-19 06:40:51,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:40:51,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:40:51,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:40:51,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:40:51,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:40:51,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:40:51,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:40:51,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:40:51,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:40:51,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:40:51,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:40:51,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:40:51,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:40:51,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:40:51,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:40:51,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:40:51,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:40:51,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:40:51,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:40:51,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:40:51,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:40:51,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:40:51,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:40:51,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:40:51,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:40:51,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:40:51,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:40:51,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:40:51,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:40:51,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:40:51,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:40:51,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:40:51,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:40:51,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:40:51,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:40:51,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:40:51,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:40:51,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:40:51,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:40:51,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:40:51,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 06:40:51,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:40:51,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:40:51,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:40:51,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:40:51,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:40:51,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:40:51,856 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:40:51,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:40:51,856 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:40:51,856 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:40:51,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:40:51,858 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:40:51,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:40:51,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:40:51,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:40:51,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:40:51,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:40:51,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:40:51,860 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:40:51,861 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:40:51,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:40:51,861 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:40:51,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:40:51,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:40:51,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:40:51,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:40:51,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:40:51,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:40:51,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:40:51,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:40:51,863 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:40:51,863 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:40:51,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:40:51,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:40:51,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:40:51,865 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2022-11-19 06:40:52,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:40:52,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:40:52,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:40:52,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:40:52,302 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:40:52,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-19 06:40:52,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data/62dac5244/0e94af5ecbde4f459055cec89f74d8de/FLAGda601f876 [2022-11-19 06:40:53,223 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:40:53,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-19 06:40:53,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data/62dac5244/0e94af5ecbde4f459055cec89f74d8de/FLAGda601f876 [2022-11-19 06:40:53,767 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/data/62dac5244/0e94af5ecbde4f459055cec89f74d8de [2022-11-19 06:40:53,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:40:53,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:40:53,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:40:53,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:40:53,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:40:53,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:40:53" (1/1) ... [2022-11-19 06:40:53,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4543b970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:53, skipping insertion in model container [2022-11-19 06:40:53,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:40:53" (1/1) ... [2022-11-19 06:40:53,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:40:53,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:40:54,645 WARN L234 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-19 06:40:55,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:40:55,362 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 06:40:55,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:40:55,540 WARN L234 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-19 06:40:55,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:40:55,789 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:40:55,919 WARN L234 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_69e48607-8d39-4c3e-a4f3-449d22b1eea2/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-19 06:40:56,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:40:56,291 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:40:56,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56 WrapperNode [2022-11-19 06:40:56,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:40:56,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:40:56,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:40:56,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:40:56,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,541 INFO L138 Inliner]: procedures = 197, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3054 [2022-11-19 06:40:56,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:40:56,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:40:56,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:40:56,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:40:56,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:40:56,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:40:56,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:40:56,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:40:56,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (1/1) ... [2022-11-19 06:40:56,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:40:56,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:40:56,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:40:56,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:40:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-19 06:40:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-19 06:40:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 06:40:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-19 06:40:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-19 06:40:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 06:40:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-19 06:40:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 06:40:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:40:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:40:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:40:56,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:40:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 06:40:56,938 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 06:40:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:40:56,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:40:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-19 06:40:56,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-19 06:40:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:40:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:40:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 06:40:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 06:40:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:40:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:40:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 06:40:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 06:40:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-19 06:40:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-19 06:40:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-19 06:40:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-19 06:40:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 06:40:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 06:40:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:40:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:40:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:40:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-19 06:40:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-19 06:40:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:40:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 06:40:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 06:40:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-19 06:40:56,943 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-19 06:40:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 06:40:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 06:40:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 06:40:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:40:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 06:40:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-19 06:40:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-19 06:40:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:40:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 06:40:56,945 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 06:40:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:40:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 06:40:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-19 06:40:56,946 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-19 06:40:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 06:40:56,946 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 06:40:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:40:56,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:40:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:40:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:40:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 06:40:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 06:40:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-19 06:40:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-19 06:40:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 06:40:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 06:40:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-19 06:40:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-19 06:40:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-19 06:40:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-19 06:40:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:40:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:40:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 06:40:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 06:40:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-19 06:40:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-19 06:40:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:40:56,949 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:40:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 06:40:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 06:40:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:40:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:40:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-19 06:40:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-19 06:40:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-19 06:40:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-19 06:40:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-19 06:40:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-19 06:40:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:40:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:40:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:40:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-19 06:40:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-19 06:40:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-19 06:40:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-19 06:40:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:40:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-19 06:40:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-19 06:40:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:40:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:40:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-19 06:40:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-19 06:40:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-19 06:40:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-19 06:40:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-19 06:40:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-19 06:40:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-19 06:40:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 06:40:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 06:40:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-19 06:40:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-19 06:40:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-19 06:40:56,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-19 06:40:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-19 06:40:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-19 06:40:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 06:40:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 06:40:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-19 06:40:56,956 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-19 06:40:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-19 06:40:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-19 06:40:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 06:40:56,957 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 06:40:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-19 06:40:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-19 06:40:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-19 06:40:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 06:40:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 06:40:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:40:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:40:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-19 06:40:56,959 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-19 06:40:57,559 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:40:57,564 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:40:58,001 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:41:16,689 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:41:16,703 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:41:16,703 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:41:16,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:41:16 BoogieIcfgContainer [2022-11-19 06:41:16,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:41:16,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:41:16,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:41:16,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:41:16,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:40:53" (1/3) ... [2022-11-19 06:41:16,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3342687d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:41:16, skipping insertion in model container [2022-11-19 06:41:16,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:56" (2/3) ... [2022-11-19 06:41:16,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3342687d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:41:16, skipping insertion in model container [2022-11-19 06:41:16,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:41:16" (3/3) ... [2022-11-19 06:41:16,715 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-19 06:41:16,733 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:41:16,734 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:41:16,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:41:16,818 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;@cb29c04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:41:16,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:41:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 801 states have (on average 1.428214731585518) internal successors, (1144), 834 states have internal predecessors, (1144), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-19 06:41:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 06:41:16,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:16,848 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:41:16,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash 127218284, now seen corresponding path program 1 times [2022-11-19 06:41:16,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:16,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354523610] [2022-11-19 06:41:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:16,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:16,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:16,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:16,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 06:41:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:17,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:41:17,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-19 06:41:17,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:17,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:17,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354523610] [2022-11-19 06:41:17,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354523610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:17,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:17,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:41:17,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600624405] [2022-11-19 06:41:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:17,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:41:17,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:17,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:41:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:41:17,623 INFO L87 Difference]: Start difference. First operand has 1083 states, 801 states have (on average 1.428214731585518) internal successors, (1144), 834 states have internal predecessors, (1144), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 06:41:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:18,073 INFO L93 Difference]: Finished difference Result 2757 states and 4067 transitions. [2022-11-19 06:41:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:41:18,076 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-11-19 06:41:18,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:18,111 INFO L225 Difference]: With dead ends: 2757 [2022-11-19 06:41:18,113 INFO L226 Difference]: Without dead ends: 1594 [2022-11-19 06:41:18,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:41:18,133 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 857 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:18,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 3282 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:41:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-19 06:41:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-11-19 06:41:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1172 states have (on average 1.401877133105802) internal successors, (1643), 1205 states have internal predecessors, (1643), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-19 06:41:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2308 transitions. [2022-11-19 06:41:18,334 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2308 transitions. Word has length 63 [2022-11-19 06:41:18,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:18,335 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2308 transitions. [2022-11-19 06:41:18,335 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 06:41:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2308 transitions. [2022-11-19 06:41:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 06:41:18,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:18,349 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:41:18,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:18,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:18,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1793418018, now seen corresponding path program 1 times [2022-11-19 06:41:18,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:18,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042318392] [2022-11-19 06:41:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:18,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:18,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:18,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 06:41:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:41:19,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-19 06:41:19,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:19,462 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:19,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042318392] [2022-11-19 06:41:19,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042318392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:19,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:19,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:41:19,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690132835] [2022-11-19 06:41:19,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:19,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:41:19,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:41:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:41:19,466 INFO L87 Difference]: Start difference. First operand 1594 states and 2308 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:41:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:19,657 INFO L93 Difference]: Finished difference Result 3164 states and 4584 transitions. [2022-11-19 06:41:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:41:19,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-11-19 06:41:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:19,681 INFO L225 Difference]: With dead ends: 3164 [2022-11-19 06:41:19,681 INFO L226 Difference]: Without dead ends: 1594 [2022-11-19 06:41:19,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:41:19,703 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1493 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:19,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1520 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:41:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-19 06:41:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-11-19 06:41:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1172 states have (on average 1.4001706484641638) internal successors, (1641), 1205 states have internal predecessors, (1641), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-19 06:41:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2306 transitions. [2022-11-19 06:41:19,803 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2306 transitions. Word has length 104 [2022-11-19 06:41:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:19,804 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2306 transitions. [2022-11-19 06:41:19,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:41:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2306 transitions. [2022-11-19 06:41:19,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 06:41:19,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:19,810 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:41:19,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:20,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:20,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:20,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:20,027 INFO L85 PathProgramCache]: Analyzing trace with hash 472963168, now seen corresponding path program 1 times [2022-11-19 06:41:20,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:20,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300534197] [2022-11-19 06:41:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:20,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:20,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:20,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:20,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 06:41:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:20,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:41:20,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-19 06:41:20,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:20,683 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:20,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300534197] [2022-11-19 06:41:20,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300534197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:20,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:20,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:41:20,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039709039] [2022-11-19 06:41:20,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:20,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:20,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:20,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:20,690 INFO L87 Difference]: Start difference. First operand 1594 states and 2306 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:41:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:20,936 INFO L93 Difference]: Finished difference Result 3168 states and 4584 transitions. [2022-11-19 06:41:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:41:20,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-11-19 06:41:20,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:20,945 INFO L225 Difference]: With dead ends: 3168 [2022-11-19 06:41:20,945 INFO L226 Difference]: Without dead ends: 1594 [2022-11-19 06:41:20,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:41:20,952 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:20,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4574 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:41:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-19 06:41:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-11-19 06:41:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1172 states have (on average 1.3984641638225257) internal successors, (1639), 1205 states have internal predecessors, (1639), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-19 06:41:21,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2304 transitions. [2022-11-19 06:41:21,059 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2304 transitions. Word has length 104 [2022-11-19 06:41:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:21,061 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2304 transitions. [2022-11-19 06:41:21,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:41:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2304 transitions. [2022-11-19 06:41:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-19 06:41:21,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:21,072 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:41:21,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:21,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:21,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:21,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:21,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1028710323, now seen corresponding path program 1 times [2022-11-19 06:41:21,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:21,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823380867] [2022-11-19 06:41:21,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:21,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:21,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:21,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:21,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 06:41:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:21,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 06:41:21,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-19 06:41:22,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:22,326 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:22,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823380867] [2022-11-19 06:41:22,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823380867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:22,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:22,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 06:41:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995378955] [2022-11-19 06:41:22,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:22,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 06:41:22,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:22,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 06:41:22,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 06:41:22,328 INFO L87 Difference]: Start difference. First operand 1594 states and 2304 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:41:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:23,671 INFO L93 Difference]: Finished difference Result 3729 states and 5375 transitions. [2022-11-19 06:41:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:41:23,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2022-11-19 06:41:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:23,684 INFO L225 Difference]: With dead ends: 3729 [2022-11-19 06:41:23,684 INFO L226 Difference]: Without dead ends: 2151 [2022-11-19 06:41:23,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:41:23,691 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 799 mSDsluCounter, 11464 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 13129 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:23,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 13129 Invalid, 61 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:41:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-11-19 06:41:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2149. [2022-11-19 06:41:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1570 states have (on average 1.3878980891719745) internal successors, (2179), 1615 states have internal predecessors, (2179), 447 states have call successors, (447), 126 states have call predecessors, (447), 131 states have return successors, (464), 444 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-19 06:41:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3090 transitions. [2022-11-19 06:41:23,870 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3090 transitions. Word has length 107 [2022-11-19 06:41:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:23,871 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3090 transitions. [2022-11-19 06:41:23,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 06:41:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3090 transitions. [2022-11-19 06:41:23,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 06:41:23,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:23,878 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:41:23,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:24,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:24,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:24,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 413444233, now seen corresponding path program 1 times [2022-11-19 06:41:24,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:24,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540455413] [2022-11-19 06:41:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:24,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:24,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:24,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:24,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 06:41:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:24,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:41:24,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:24,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:24,720 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:24,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540455413] [2022-11-19 06:41:24,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540455413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:24,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:24,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:41:24,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049624789] [2022-11-19 06:41:24,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:24,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:24,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:24,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:24,722 INFO L87 Difference]: Start difference. First operand 2149 states and 3090 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-19 06:41:25,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:25,303 INFO L93 Difference]: Finished difference Result 2740 states and 4037 transitions. [2022-11-19 06:41:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:41:25,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2022-11-19 06:41:25,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:25,319 INFO L225 Difference]: With dead ends: 2740 [2022-11-19 06:41:25,319 INFO L226 Difference]: Without dead ends: 2737 [2022-11-19 06:41:25,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:41:25,323 INFO L413 NwaCegarLoop]: 2176 mSDtfsCounter, 791 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 5592 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:25,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 5592 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:41:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2022-11-19 06:41:25,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2151. [2022-11-19 06:41:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1572 states have (on average 1.3874045801526718) internal successors, (2181), 1617 states have internal predecessors, (2181), 447 states have call successors, (447), 126 states have call predecessors, (447), 131 states have return successors, (464), 444 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-19 06:41:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3092 transitions. [2022-11-19 06:41:25,519 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3092 transitions. Word has length 113 [2022-11-19 06:41:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:25,519 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3092 transitions. [2022-11-19 06:41:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-19 06:41:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3092 transitions. [2022-11-19 06:41:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-19 06:41:25,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:25,526 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:41:25,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:25,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:25,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash -353684413, now seen corresponding path program 1 times [2022-11-19 06:41:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:25,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466140487] [2022-11-19 06:41:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:25,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:25,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:25,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:25,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 06:41:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:26,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:41:26,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:26,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:26,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466140487] [2022-11-19 06:41:26,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466140487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:26,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:26,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:41:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638653957] [2022-11-19 06:41:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:26,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:26,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:26,301 INFO L87 Difference]: Start difference. First operand 2151 states and 3092 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-19 06:41:26,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:26,942 INFO L93 Difference]: Finished difference Result 2743 states and 4040 transitions. [2022-11-19 06:41:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:41:26,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2022-11-19 06:41:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:26,959 INFO L225 Difference]: With dead ends: 2743 [2022-11-19 06:41:26,959 INFO L226 Difference]: Without dead ends: 2740 [2022-11-19 06:41:26,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:41:26,965 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 791 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 5603 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:26,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 5603 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:41:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-11-19 06:41:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2151. [2022-11-19 06:41:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1572 states have (on average 1.3874045801526718) internal successors, (2181), 1617 states have internal predecessors, (2181), 447 states have call successors, (447), 126 states have call predecessors, (447), 131 states have return successors, (464), 444 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-19 06:41:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3092 transitions. [2022-11-19 06:41:27,192 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3092 transitions. Word has length 114 [2022-11-19 06:41:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:27,192 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3092 transitions. [2022-11-19 06:41:27,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-19 06:41:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3092 transitions. [2022-11-19 06:41:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-19 06:41:27,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:27,201 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:41:27,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:27,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:27,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:27,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2133220354, now seen corresponding path program 1 times [2022-11-19 06:41:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:27,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103849364] [2022-11-19 06:41:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:27,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:27,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:27,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:27,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 06:41:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:27,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:41:27,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:28,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:28,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:28,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103849364] [2022-11-19 06:41:28,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103849364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:28,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:28,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:41:28,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394561663] [2022-11-19 06:41:28,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:28,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:28,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:28,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:28,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:28,477 INFO L87 Difference]: Start difference. First operand 2151 states and 3092 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:41:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:31,563 INFO L93 Difference]: Finished difference Result 4324 states and 6334 transitions. [2022-11-19 06:41:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:41:31,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-11-19 06:41:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:31,579 INFO L225 Difference]: With dead ends: 4324 [2022-11-19 06:41:31,580 INFO L226 Difference]: Without dead ends: 2740 [2022-11-19 06:41:31,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:31,587 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1916 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:31,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 2934 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 06:41:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-11-19 06:41:31,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2152. [2022-11-19 06:41:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1573 states have (on average 1.3871582962492053) internal successors, (2182), 1618 states have internal predecessors, (2182), 447 states have call successors, (447), 126 states have call predecessors, (447), 131 states have return successors, (464), 444 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-19 06:41:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3093 transitions. [2022-11-19 06:41:31,812 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3093 transitions. Word has length 123 [2022-11-19 06:41:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:31,813 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 3093 transitions. [2022-11-19 06:41:31,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:41:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3093 transitions. [2022-11-19 06:41:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-19 06:41:31,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:31,821 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-19 06:41:31,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-19 06:41:32,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:32,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash -873653155, now seen corresponding path program 1 times [2022-11-19 06:41:32,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:32,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96007199] [2022-11-19 06:41:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:32,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:32,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:32,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:32,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 06:41:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:32,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:41:32,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:32,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:32,596 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:32,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96007199] [2022-11-19 06:41:32,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96007199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:32,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:32,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:41:32,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419260547] [2022-11-19 06:41:32,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:32,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:41:32,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:32,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:41:32,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:41:32,598 INFO L87 Difference]: Start difference. First operand 2152 states and 3093 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:41:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:33,496 INFO L93 Difference]: Finished difference Result 2749 states and 4048 transitions. [2022-11-19 06:41:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:41:33,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-11-19 06:41:33,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:33,511 INFO L225 Difference]: With dead ends: 2749 [2022-11-19 06:41:33,512 INFO L226 Difference]: Without dead ends: 2746 [2022-11-19 06:41:33,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:41:33,514 INFO L413 NwaCegarLoop]: 2105 mSDtfsCounter, 1113 mSDsluCounter, 5149 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 7254 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:33,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 7254 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:41:33,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-11-19 06:41:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2154. [2022-11-19 06:41:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 1574 states have (on average 1.3869123252858957) internal successors, (2183), 1619 states have internal predecessors, (2183), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-19 06:41:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3096 transitions. [2022-11-19 06:41:33,803 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3096 transitions. Word has length 125 [2022-11-19 06:41:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:33,803 INFO L495 AbstractCegarLoop]: Abstraction has 2154 states and 3096 transitions. [2022-11-19 06:41:33,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:41:33,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3096 transitions. [2022-11-19 06:41:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 06:41:33,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:33,825 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:41:33,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:34,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:34,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:34,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1193820731, now seen corresponding path program 1 times [2022-11-19 06:41:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:34,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619877708] [2022-11-19 06:41:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:34,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:34,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:34,045 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:34,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 06:41:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:34,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:41:34,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-19 06:41:35,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:35,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619877708] [2022-11-19 06:41:35,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619877708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:35,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:35,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-19 06:41:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398655293] [2022-11-19 06:41:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:41:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:41:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:41:35,550 INFO L87 Difference]: Start difference. First operand 2154 states and 3096 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 9 states have internal predecessors, (83), 3 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 06:41:44,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:41:46,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:41:48,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:48,926 INFO L93 Difference]: Finished difference Result 3747 states and 5402 transitions. [2022-11-19 06:41:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 06:41:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 9 states have internal predecessors, (83), 3 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) Word has length 133 [2022-11-19 06:41:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:48,940 INFO L225 Difference]: With dead ends: 3747 [2022-11-19 06:41:48,940 INFO L226 Difference]: Without dead ends: 2160 [2022-11-19 06:41:48,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-11-19 06:41:48,945 INFO L413 NwaCegarLoop]: 2151 mSDtfsCounter, 1832 mSDsluCounter, 19607 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 21758 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:48,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 21758 Invalid, 1430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [204 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-19 06:41:48,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2022-11-19 06:41:49,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2154. [2022-11-19 06:41:49,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 1574 states have (on average 1.386277001270648) internal successors, (2182), 1619 states have internal predecessors, (2182), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-19 06:41:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3095 transitions. [2022-11-19 06:41:49,173 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3095 transitions. Word has length 133 [2022-11-19 06:41:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:49,174 INFO L495 AbstractCegarLoop]: Abstraction has 2154 states and 3095 transitions. [2022-11-19 06:41:49,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 9 states have internal predecessors, (83), 3 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-19 06:41:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3095 transitions. [2022-11-19 06:41:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-19 06:41:49,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:49,184 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:41:49,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:49,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:49,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash 450561579, now seen corresponding path program 1 times [2022-11-19 06:41:49,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:49,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621708271] [2022-11-19 06:41:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:49,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:49,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:49,404 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:49,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 06:41:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:49,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:41:49,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:50,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:50,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:50,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621708271] [2022-11-19 06:41:50,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621708271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:50,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:50,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:41:50,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297656898] [2022-11-19 06:41:50,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:50,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:50,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:50,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:50,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:50,518 INFO L87 Difference]: Start difference. First operand 2154 states and 3095 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:41:55,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:55,021 INFO L93 Difference]: Finished difference Result 4332 states and 6342 transitions. [2022-11-19 06:41:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:41:55,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-11-19 06:41:55,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:55,054 INFO L225 Difference]: With dead ends: 4332 [2022-11-19 06:41:55,054 INFO L226 Difference]: Without dead ends: 2745 [2022-11-19 06:41:55,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:55,060 INFO L413 NwaCegarLoop]: 2064 mSDtfsCounter, 2009 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:55,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 3141 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 06:41:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-11-19 06:41:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2158. [2022-11-19 06:41:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1578 states have (on average 1.3859315589353611) internal successors, (2187), 1623 states have internal predecessors, (2187), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-19 06:41:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3100 transitions. [2022-11-19 06:41:55,346 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3100 transitions. Word has length 135 [2022-11-19 06:41:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:55,347 INFO L495 AbstractCegarLoop]: Abstraction has 2158 states and 3100 transitions. [2022-11-19 06:41:55,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:41:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3100 transitions. [2022-11-19 06:41:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-19 06:41:55,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:55,358 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:41:55,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:55,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:55,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:41:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:55,571 INFO L85 PathProgramCache]: Analyzing trace with hash -417873427, now seen corresponding path program 1 times [2022-11-19 06:41:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:55,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637410823] [2022-11-19 06:41:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:55,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:55,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:55,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:41:55,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 06:41:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:56,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:41:56,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:56,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:57,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:57,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637410823] [2022-11-19 06:41:57,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637410823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:57,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1770219906] [2022-11-19 06:41:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:57,101 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:41:57,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:41:57,103 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:41:57,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 06:41:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:58,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:41:58,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:58,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:41:59,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1770219906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:59,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195279360] [2022-11-19 06:41:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:59,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:41:59,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:41:59,041 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:41:59,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 06:41:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:59,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:41:59,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-19 06:41:59,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:41:59,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195279360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:59,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-19 06:41:59,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5, 4, 5] total 11 [2022-11-19 06:41:59,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747876815] [2022-11-19 06:41:59,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:41:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:41:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-19 06:41:59,732 INFO L87 Difference]: Start difference. First operand 2158 states and 3100 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:42:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:00,932 INFO L93 Difference]: Finished difference Result 3231 states and 4813 transitions. [2022-11-19 06:42:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:42:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-11-19 06:42:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:00,949 INFO L225 Difference]: With dead ends: 3231 [2022-11-19 06:42:00,950 INFO L226 Difference]: Without dead ends: 3228 [2022-11-19 06:42:00,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:42:00,952 INFO L413 NwaCegarLoop]: 2280 mSDtfsCounter, 1543 mSDsluCounter, 5748 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 8028 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:00,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 8028 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:42:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2022-11-19 06:42:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 2158. [2022-11-19 06:42:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1578 states have (on average 1.3859315589353611) internal successors, (2187), 1622 states have internal predecessors, (2187), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-19 06:42:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3100 transitions. [2022-11-19 06:42:01,362 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3100 transitions. Word has length 138 [2022-11-19 06:42:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:01,363 INFO L495 AbstractCegarLoop]: Abstraction has 2158 states and 3100 transitions. [2022-11-19 06:42:01,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:42:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3100 transitions. [2022-11-19 06:42:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-19 06:42:01,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:01,375 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:01,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:01,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-19 06:42:01,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:01,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:01,986 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:01,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1421287376, now seen corresponding path program 1 times [2022-11-19 06:42:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:01,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187130465] [2022-11-19 06:42:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:01,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:01,989 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:42:01,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-19 06:42:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:02,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:42:02,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:42:03,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-19 06:42:03,538 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:42:03,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187130465] [2022-11-19 06:42:03,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187130465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:03,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [67997823] [2022-11-19 06:42:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:03,539 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:42:03,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:42:03,540 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:42:03,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-19 06:42:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:04,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:42:04,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-19 06:42:04,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:42:04,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [67997823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:04,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:42:04,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 5] total 9 [2022-11-19 06:42:04,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66383533] [2022-11-19 06:42:04,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:04,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:42:04,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:42:04,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:42:04,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 06:42:04,302 INFO L87 Difference]: Start difference. First operand 2158 states and 3100 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:42:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:04,595 INFO L93 Difference]: Finished difference Result 4295 states and 6203 transitions. [2022-11-19 06:42:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:42:04,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-11-19 06:42:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:04,604 INFO L225 Difference]: With dead ends: 4295 [2022-11-19 06:42:04,605 INFO L226 Difference]: Without dead ends: 2161 [2022-11-19 06:42:04,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 06:42:04,613 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:04,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3035 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:42:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2022-11-19 06:42:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2158. [2022-11-19 06:42:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1578 states have (on average 1.3802281368821292) internal successors, (2178), 1622 states have internal predecessors, (2178), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-19 06:42:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3091 transitions. [2022-11-19 06:42:04,914 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3091 transitions. Word has length 160 [2022-11-19 06:42:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:04,914 INFO L495 AbstractCegarLoop]: Abstraction has 2158 states and 3091 transitions. [2022-11-19 06:42:04,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:42:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3091 transitions. [2022-11-19 06:42:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-19 06:42:04,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:04,925 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:04,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:05,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:05,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1230852065, now seen corresponding path program 1 times [2022-11-19 06:42:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:05,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062605186] [2022-11-19 06:42:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:05,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:05,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:05,334 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:42:05,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-19 06:42:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:05,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:42:05,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:42:06,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-19 06:42:07,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:42:07,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062605186] [2022-11-19 06:42:07,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062605186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:07,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [962887752] [2022-11-19 06:42:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:07,007 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:42:07,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:42:07,008 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:42:07,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-19 06:42:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:07,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:42:07,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-19 06:42:07,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:42:07,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [962887752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:07,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:42:07,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 10 [2022-11-19 06:42:07,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859308542] [2022-11-19 06:42:07,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:07,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:42:07,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:42:07,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:42:07,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:42:07,901 INFO L87 Difference]: Start difference. First operand 2158 states and 3091 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:42:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:09,580 INFO L93 Difference]: Finished difference Result 4679 states and 6873 transitions. [2022-11-19 06:42:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:42:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-11-19 06:42:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:09,594 INFO L225 Difference]: With dead ends: 4679 [2022-11-19 06:42:09,594 INFO L226 Difference]: Without dead ends: 3088 [2022-11-19 06:42:09,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 06:42:09,601 INFO L413 NwaCegarLoop]: 2208 mSDtfsCounter, 893 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 5842 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:09,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 5842 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 06:42:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2022-11-19 06:42:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 2160. [2022-11-19 06:42:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 1580 states have (on average 1.379746835443038) internal successors, (2180), 1624 states have internal predecessors, (2180), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-19 06:42:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3093 transitions. [2022-11-19 06:42:10,021 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3093 transitions. Word has length 163 [2022-11-19 06:42:10,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:10,022 INFO L495 AbstractCegarLoop]: Abstraction has 2160 states and 3093 transitions. [2022-11-19 06:42:10,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:42:10,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3093 transitions. [2022-11-19 06:42:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-19 06:42:10,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:10,033 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:10,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:10,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:10,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:10,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash -329349717, now seen corresponding path program 1 times [2022-11-19 06:42:10,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:10,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556608938] [2022-11-19 06:42:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:10,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:10,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:10,442 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:42:10,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-19 06:42:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:11,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:42:11,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-19 06:42:11,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:42:11,295 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:42:11,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556608938] [2022-11-19 06:42:11,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556608938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:11,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:11,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:42:11,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285400171] [2022-11-19 06:42:11,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:42:11,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:42:11,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:42:11,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:11,302 INFO L87 Difference]: Start difference. First operand 2160 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:42:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:12,215 INFO L93 Difference]: Finished difference Result 4232 states and 6157 transitions. [2022-11-19 06:42:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:42:12,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 181 [2022-11-19 06:42:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:12,238 INFO L225 Difference]: With dead ends: 4232 [2022-11-19 06:42:12,238 INFO L226 Difference]: Without dead ends: 2639 [2022-11-19 06:42:12,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:12,243 INFO L413 NwaCegarLoop]: 2017 mSDtfsCounter, 354 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 3593 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:12,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 3593 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:42:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-11-19 06:42:12,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2163. [2022-11-19 06:42:12,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1583 states have (on average 1.379658875552748) internal successors, (2184), 1627 states have internal predecessors, (2184), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 445 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-19 06:42:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3097 transitions. [2022-11-19 06:42:12,606 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3097 transitions. Word has length 181 [2022-11-19 06:42:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:12,609 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 3097 transitions. [2022-11-19 06:42:12,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:42:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3097 transitions. [2022-11-19 06:42:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-19 06:42:12,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:12,620 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:12,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:12,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:12,844 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:12,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1796665243, now seen corresponding path program 1 times [2022-11-19 06:42:12,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:12,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636451353] [2022-11-19 06:42:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:12,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:12,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:12,847 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:42:12,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-19 06:42:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:13,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:42:13,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-19 06:42:14,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:42:14,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:42:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636451353] [2022-11-19 06:42:14,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636451353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:14,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:14,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 06:42:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343438764] [2022-11-19 06:42:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:42:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:42:14,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:42:14,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:42:14,051 INFO L87 Difference]: Start difference. First operand 2163 states and 3097 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:42:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:16,597 INFO L93 Difference]: Finished difference Result 4842 states and 7125 transitions. [2022-11-19 06:42:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:42:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 189 [2022-11-19 06:42:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:16,634 INFO L225 Difference]: With dead ends: 4842 [2022-11-19 06:42:16,634 INFO L226 Difference]: Without dead ends: 3246 [2022-11-19 06:42:16,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:42:16,640 INFO L413 NwaCegarLoop]: 2269 mSDtfsCounter, 1175 mSDsluCounter, 8312 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 10581 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:16,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 10581 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 06:42:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2022-11-19 06:42:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2166. [2022-11-19 06:42:16,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 1586 states have (on average 1.3789407313997477) internal successors, (2187), 1629 states have internal predecessors, (2187), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 446 states have call predecessors, (465), 447 states have call successors, (465) [2022-11-19 06:42:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3100 transitions. [2022-11-19 06:42:16,918 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3100 transitions. Word has length 189 [2022-11-19 06:42:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:16,918 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 3100 transitions. [2022-11-19 06:42:16,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:42:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3100 transitions. [2022-11-19 06:42:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-19 06:42:16,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:16,928 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:16,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:17,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:17,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 27010145, now seen corresponding path program 1 times [2022-11-19 06:42:17,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:17,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581760829] [2022-11-19 06:42:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:17,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:42:17,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:17,147 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:42:17,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-19 06:42:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:20,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 145 conjunts are in the unsatisfiable core [2022-11-19 06:42:20,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:20,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-19 06:42:21,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-19 06:42:21,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-19 06:42:22,253 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-19 06:42:22,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-19 06:42:22,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-19 06:42:23,096 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 06:42:23,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-19 06:42:23,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:42:23,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:42:23,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:42:23,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 30 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 81 [2022-11-19 06:42:25,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:25,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:25,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:25,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:25,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:25,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:25,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:25,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:25,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 38 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 100 [2022-11-19 06:42:25,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:42:25,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 06:42:26,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 06:42:26,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2022-11-19 06:42:26,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-19 06:42:27,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 47 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 94 [2022-11-19 06:42:27,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 80 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 138 [2022-11-19 06:42:27,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 47 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 96 [2022-11-19 06:42:28,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 80 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 118 [2022-11-19 06:42:28,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 47 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 80 [2022-11-19 06:42:28,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 47 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 80 [2022-11-19 06:42:28,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-19 06:42:28,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-19 06:42:28,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-19 06:42:29,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:29,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:29,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:29,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:29,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2022-11-19 06:42:29,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-19 06:42:29,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:29,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:29,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-19 06:42:29,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-19 06:42:29,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:29,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:29,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-19 06:42:29,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-11-19 06:42:31,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 22 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 69 [2022-11-19 06:42:31,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 85 [2022-11-19 06:42:31,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:31,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-19 06:42:32,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-19 06:42:32,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 85 [2022-11-19 06:42:32,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:32,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 22 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 69 [2022-11-19 06:42:35,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 508 treesize of output 328 [2022-11-19 06:42:35,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:35,813 INFO L321 Elim1Store]: treesize reduction 1228, result has 7.0 percent of original size [2022-11-19 06:42:35,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 7 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 184 case distinctions, treesize of input 427 treesize of output 279 [2022-11-19 06:42:35,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 243 [2022-11-19 06:42:35,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:35,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 121 [2022-11-19 06:42:35,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 82 [2022-11-19 06:42:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-19 06:42:36,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:36,602 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1042 (Array (_ BitVec 64) (_ BitVec 8))) (v_ArrVal_1043 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1041 (Array (_ BitVec 64) (_ BitVec 64)))) (bvsle ((_ extract 31 0) (let ((.cse2 (bvadd |c_ULTIMATE.start_slip_open_~sl~12#1.offset| (_ bv12 64)))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1042) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1041) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse2))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1043) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse2))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd .cse1 (_ bv119 64))) (select .cse0 (bvadd (_ bv118 64) .cse1))) (select .cse0 (bvadd .cse1 (_ bv117 64)))) (select .cse0 (bvadd (_ bv116 64) .cse1))) (select .cse0 (bvadd (_ bv115 64) .cse1))) (select .cse0 (bvadd .cse1 (_ bv114 64)))) (select .cse0 (bvadd (_ bv113 64) .cse1))) (select .cse0 (bvadd (_ bv112 64) .cse1)))))) (_ bv0 32))) is different from false [2022-11-19 06:42:36,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:42:36,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581760829] [2022-11-19 06:42:36,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581760829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:42:36,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [464390031] [2022-11-19 06:42:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:36,632 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:42:36,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:42:36,634 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:42:36,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e48607-8d39-4c3e-a4f3-449d22b1eea2/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process