./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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_96475715-e213-4ca8-bc32-9f8526863675/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 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d --- 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 07:16:45,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:16:45,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:16:45,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:16:45,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:16:45,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:16:45,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:16:45,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:16:45,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:16:45,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:16:45,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:16:45,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:16:45,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:16:45,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:16:45,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:16:45,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:16:45,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:16:45,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:16:45,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:16:45,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:16:45,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:16:45,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:16:45,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:16:45,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:16:45,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:16:45,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:16:45,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:16:45,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:16:45,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:16:45,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:16:45,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:16:45,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:16:45,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:16:45,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:16:45,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:16:45,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:16:45,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:16:45,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:16:45,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:16:45,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:16:45,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:16:45,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:16:45,492 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:16:45,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:16:45,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:16:45,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:16:45,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:16:45,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:16:45,494 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:16:45,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:16:45,495 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:16:45,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:16:45,495 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:16:45,495 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:16:45,495 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:16:45,496 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:16:45,496 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:16:45,496 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:16:45,496 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:16:45,497 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:16:45,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:16:45,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:16:45,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:16:45,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:16:45,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:16:45,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:16:45,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:16:45,499 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:16:45,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:16:45,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:16:45,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:16:45,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:16:45,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:16:45,500 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:16:45,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:16:45,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:16:45,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:16:45,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:16:45,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:16:45,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:16:45,501 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_96475715-e213-4ca8-bc32-9f8526863675/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d [2022-11-19 07:16:45,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:16:45,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:16:45,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:16:45,822 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:16:45,824 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:16:45,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-11-19 07:16:45,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data/9f2f5de30/c55409a25de245d98a25d9d1cc3218d5/FLAG0dc1de7d9 [2022-11-19 07:16:46,676 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:16:46,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-11-19 07:16:46,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data/9f2f5de30/c55409a25de245d98a25d9d1cc3218d5/FLAG0dc1de7d9 [2022-11-19 07:16:47,233 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data/9f2f5de30/c55409a25de245d98a25d9d1cc3218d5 [2022-11-19 07:16:47,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:16:47,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:16:47,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:16:47,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:16:47,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:16:47,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:16:47" (1/1) ... [2022-11-19 07:16:47,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62517cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:47, skipping insertion in model container [2022-11-19 07:16:47,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:16:47" (1/1) ... [2022-11-19 07:16:47,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:16:47,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:16:48,269 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_96475715-e213-4ca8-bc32-9f8526863675/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-11-19 07:16:48,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:16:48,861 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:16:49,024 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_96475715-e213-4ca8-bc32-9f8526863675/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-11-19 07:16:49,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:16:49,330 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:16:49,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49 WrapperNode [2022-11-19 07:16:49,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:16:49,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:16:49,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:16:49,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:16:49,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,489 INFO L138 Inliner]: procedures = 197, calls = 1071, calls flagged for inlining = 87, calls inlined = 80, statements flattened = 2459 [2022-11-19 07:16:49,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:16:49,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:16:49,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:16:49,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:16:49,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,641 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:16:49,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:16:49,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:16:49,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:16:49,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (1/1) ... [2022-11-19 07:16:49,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:16:49,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:16:49,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:16:49,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:16:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 07:16:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 07:16:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-19 07:16:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-19 07:16:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:16:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:16:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:16:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:16:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-19 07:16:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-19 07:16:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:16:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:16:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:16:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:16:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:16:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:16:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure pull_skb [2022-11-19 07:16:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pull_skb [2022-11-19 07:16:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-19 07:16:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-19 07:16:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure free_skb_pool [2022-11-19 07:16:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure free_skb_pool [2022-11-19 07:16:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-19 07:16:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-19 07:16:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:16:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:16:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 07:16:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 07:16:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 07:16:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 07:16:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 07:16:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 07:16:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:16:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:16:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:16:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:16:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 07:16:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 07:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:16:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure fill_skb_pool [2022-11-19 07:16:49,796 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_skb_pool [2022-11-19 07:16:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:16:49,796 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:16:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:16:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 07:16:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 07:16:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:16:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:16:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:16:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:16:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_set_mac_address [2022-11-19 07:16:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_set_mac_address [2022-11-19 07:16:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:16:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:16:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_set_multicast [2022-11-19 07:16:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_set_multicast [2022-11-19 07:16:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 07:16:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 07:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:16:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-19 07:16:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-19 07:16:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:16:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:16:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 07:16:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 07:16:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:16:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:16:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2022-11-19 07:16:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2022-11-19 07:16:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure __printk_ratelimit [2022-11-19 07:16:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __printk_ratelimit [2022-11-19 07:16:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-19 07:16:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-19 07:16:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:16:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:16:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:16:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:16:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_tx_timeout [2022-11-19 07:16:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_tx_timeout [2022-11-19 07:16:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:16:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:16:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:16:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_ioctl [2022-11-19 07:16:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_ioctl [2022-11-19 07:16:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:16:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:16:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 07:16:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 07:16:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:16:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:16:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:16:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:16:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 07:16:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 07:16:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:16:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:16:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:16:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_reset [2022-11-19 07:16:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_reset [2022-11-19 07:16:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:16:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:16:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_disconnect [2022-11-19 07:16:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_disconnect [2022-11-19 07:16:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:16:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-11-19 07:16:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-11-19 07:16:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:16:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:16:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-19 07:16:49,818 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-19 07:16:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-19 07:16:49,818 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-19 07:16:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 07:16:49,819 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 07:16:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2022-11-19 07:16:49,820 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2022-11-19 07:16:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:16:49,824 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:16:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:16:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2022-11-19 07:16:49,825 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2022-11-19 07:16:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:16:49,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:16:50,505 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:16:50,510 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:16:50,679 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:16:53,058 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:16:53,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:16:53,593 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:16:53,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:16:53 BoogieIcfgContainer [2022-11-19 07:16:53,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:16:53,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:16:53,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:16:53,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:16:53,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:16:47" (1/3) ... [2022-11-19 07:16:53,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dee754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:16:53, skipping insertion in model container [2022-11-19 07:16:53,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:16:49" (2/3) ... [2022-11-19 07:16:53,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dee754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:16:53, skipping insertion in model container [2022-11-19 07:16:53,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:16:53" (3/3) ... [2022-11-19 07:16:53,606 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-11-19 07:16:53,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:16:53,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:16:53,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:16:53,737 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;@179af64c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:16:53,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:16:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 666 states, 422 states have (on average 1.3554502369668247) internal successors, (572), 438 states have internal predecessors, (572), 188 states have call successors, (188), 55 states have call predecessors, (188), 54 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) [2022-11-19 07:16:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 07:16:53,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:53,763 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 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 07:16:53,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:53,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:53,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1221183722, now seen corresponding path program 1 times [2022-11-19 07:16:53,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:53,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348845616] [2022-11-19 07:16:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:53,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-19 07:16:54,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:54,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348845616] [2022-11-19 07:16:54,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348845616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:54,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:54,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:54,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931887602] [2022-11-19 07:16:54,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:54,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:54,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:54,476 INFO L87 Difference]: Start difference. First operand has 666 states, 422 states have (on average 1.3554502369668247) internal successors, (572), 438 states have internal predecessors, (572), 188 states have call successors, (188), 55 states have call predecessors, (188), 54 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 07:16:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:56,424 INFO L93 Difference]: Finished difference Result 1956 states and 2791 transitions. [2022-11-19 07:16:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:56,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 48 [2022-11-19 07:16:56,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:56,447 INFO L225 Difference]: With dead ends: 1956 [2022-11-19 07:16:56,447 INFO L226 Difference]: Without dead ends: 1290 [2022-11-19 07:16:56,455 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 07:16:56,458 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 898 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:56,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1818 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 07:16:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-11-19 07:16:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2022-11-19 07:16:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 826 states have (on average 1.3329297820823245) internal successors, (1101), 844 states have internal predecessors, (1101), 357 states have call successors, (357), 107 states have call predecessors, (357), 106 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2022-11-19 07:16:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1814 transitions. [2022-11-19 07:16:56,649 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1814 transitions. Word has length 48 [2022-11-19 07:16:56,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:56,650 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1814 transitions. [2022-11-19 07:16:56,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 07:16:56,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1814 transitions. [2022-11-19 07:16:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 07:16:56,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:56,662 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] [2022-11-19 07:16:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:16:56,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1466056097, now seen corresponding path program 1 times [2022-11-19 07:16:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:56,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928691540] [2022-11-19 07:16:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:57,168 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 07:16:57,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:57,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928691540] [2022-11-19 07:16:57,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928691540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:57,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:57,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:16:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392439416] [2022-11-19 07:16:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:57,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:16:57,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:57,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:16:57,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:16:57,173 INFO L87 Difference]: Start difference. First operand 1290 states and 1814 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:16:59,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:59,308 INFO L93 Difference]: Finished difference Result 2566 states and 3627 transitions. [2022-11-19 07:16:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:16:59,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-19 07:16:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:59,324 INFO L225 Difference]: With dead ends: 2566 [2022-11-19 07:16:59,325 INFO L226 Difference]: Without dead ends: 2561 [2022-11-19 07:16:59,326 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 07:16:59,328 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 906 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:59,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 2800 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-19 07:16:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-11-19 07:16:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2553. [2022-11-19 07:16:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 1633 states have (on average 1.333129210042866) internal successors, (2177), 1669 states have internal predecessors, (2177), 707 states have call successors, (707), 213 states have call predecessors, (707), 212 states have return successors, (726), 698 states have call predecessors, (726), 706 states have call successors, (726) [2022-11-19 07:16:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3610 transitions. [2022-11-19 07:16:59,503 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3610 transitions. Word has length 57 [2022-11-19 07:16:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:59,504 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3610 transitions. [2022-11-19 07:16:59,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:16:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3610 transitions. [2022-11-19 07:16:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 07:16:59,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:59,525 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 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 07:16:59,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:16:59,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 571284496, now seen corresponding path program 1 times [2022-11-19 07:16:59,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:59,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778327009] [2022-11-19 07:16:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:16:59,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:59,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778327009] [2022-11-19 07:16:59,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778327009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:59,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:59,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:59,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420742543] [2022-11-19 07:16:59,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:59,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:59,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:59,916 INFO L87 Difference]: Start difference. First operand 2553 states and 3610 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:17:02,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:02,283 INFO L93 Difference]: Finished difference Result 6635 states and 9323 transitions. [2022-11-19 07:17:02,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:02,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2022-11-19 07:17:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:02,305 INFO L225 Difference]: With dead ends: 6635 [2022-11-19 07:17:02,305 INFO L226 Difference]: Without dead ends: 4096 [2022-11-19 07:17:02,315 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 07:17:02,316 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 555 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:02,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1748 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:17:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2022-11-19 07:17:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 4089. [2022-11-19 07:17:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 2607 states have (on average 1.3291139240506329) internal successors, (3465), 2659 states have internal predecessors, (3465), 1120 states have call successors, (1120), 362 states have call predecessors, (1120), 361 states have return successors, (1139), 1107 states have call predecessors, (1139), 1119 states have call successors, (1139) [2022-11-19 07:17:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5724 transitions. [2022-11-19 07:17:02,576 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5724 transitions. Word has length 122 [2022-11-19 07:17:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:02,579 INFO L495 AbstractCegarLoop]: Abstraction has 4089 states and 5724 transitions. [2022-11-19 07:17:02,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:17:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5724 transitions. [2022-11-19 07:17:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-19 07:17:02,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:02,592 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:02,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:17:02,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:02,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash 240461156, now seen corresponding path program 1 times [2022-11-19 07:17:02,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:02,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695875706] [2022-11-19 07:17:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-19 07:17:02,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:02,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695875706] [2022-11-19 07:17:02,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695875706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:02,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:02,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:17:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548809813] [2022-11-19 07:17:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:17:02,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:17:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:17:02,933 INFO L87 Difference]: Start difference. First operand 4089 states and 5724 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:17:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:06,031 INFO L93 Difference]: Finished difference Result 9877 states and 13777 transitions. [2022-11-19 07:17:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:06,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 134 [2022-11-19 07:17:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:06,064 INFO L225 Difference]: With dead ends: 9877 [2022-11-19 07:17:06,065 INFO L226 Difference]: Without dead ends: 5808 [2022-11-19 07:17:06,078 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 07:17:06,084 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 700 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:06,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1970 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:17:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5808 states. [2022-11-19 07:17:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5808 to 5801. [2022-11-19 07:17:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 3711 states have (on average 1.326866073834546) internal successors, (4924), 3779 states have internal predecessors, (4924), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 537 states have return successors, (1575), 1535 states have call predecessors, (1575), 1551 states have call successors, (1575) [2022-11-19 07:17:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 8051 transitions. [2022-11-19 07:17:06,399 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 8051 transitions. Word has length 134 [2022-11-19 07:17:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:06,401 INFO L495 AbstractCegarLoop]: Abstraction has 5801 states and 8051 transitions. [2022-11-19 07:17:06,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:17:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 8051 transitions. [2022-11-19 07:17:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-19 07:17:06,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:06,417 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:06,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:17:06,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:06,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash -453687256, now seen corresponding path program 1 times [2022-11-19 07:17:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:06,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640731452] [2022-11-19 07:17:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:06,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-19 07:17:07,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640731452] [2022-11-19 07:17:07,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640731452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416358618] [2022-11-19 07:17:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:07,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:07,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:07,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:07,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:17:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:08,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 2371 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:17:08,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-19 07:17:08,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:08,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416358618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:08,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:17:08,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-19 07:17:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159966886] [2022-11-19 07:17:08,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:08,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:17:08,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:08,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:17:08,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:17:08,535 INFO L87 Difference]: Start difference. First operand 5801 states and 8051 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:17:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:10,746 INFO L93 Difference]: Finished difference Result 11630 states and 16166 transitions. [2022-11-19 07:17:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:10,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 147 [2022-11-19 07:17:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:10,779 INFO L225 Difference]: With dead ends: 11630 [2022-11-19 07:17:10,779 INFO L226 Difference]: Without dead ends: 5849 [2022-11-19 07:17:10,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:17:10,804 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 3 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:10,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1620 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-19 07:17:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2022-11-19 07:17:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5813. [2022-11-19 07:17:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5813 states, 3723 states have (on average 1.325812516787537) internal successors, (4936), 3791 states have internal predecessors, (4936), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 537 states have return successors, (1575), 1535 states have call predecessors, (1575), 1551 states have call successors, (1575) [2022-11-19 07:17:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5813 states to 5813 states and 8063 transitions. [2022-11-19 07:17:11,161 INFO L78 Accepts]: Start accepts. Automaton has 5813 states and 8063 transitions. Word has length 147 [2022-11-19 07:17:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:11,162 INFO L495 AbstractCegarLoop]: Abstraction has 5813 states and 8063 transitions. [2022-11-19 07:17:11,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:17:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 5813 states and 8063 transitions. [2022-11-19 07:17:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-19 07:17:11,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:11,179 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:11,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:11,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:11,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash 60666208, now seen corresponding path program 1 times [2022-11-19 07:17:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:11,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43678207] [2022-11-19 07:17:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-19 07:17:12,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:12,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43678207] [2022-11-19 07:17:12,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43678207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:12,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911727393] [2022-11-19 07:17:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:12,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:12,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:12,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:12,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:17:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:13,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:17:13,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-19 07:17:13,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:13,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911727393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:13,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:17:13,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-19 07:17:13,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514229973] [2022-11-19 07:17:13,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:13,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:17:13,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:13,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:17:13,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:17:13,347 INFO L87 Difference]: Start difference. First operand 5813 states and 8063 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:17:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:15,228 INFO L93 Difference]: Finished difference Result 8735 states and 12148 transitions. [2022-11-19 07:17:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:15,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 148 [2022-11-19 07:17:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:15,271 INFO L225 Difference]: With dead ends: 8735 [2022-11-19 07:17:15,271 INFO L226 Difference]: Without dead ends: 5829 [2022-11-19 07:17:15,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:17:15,286 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 4 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:15,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1618 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 07:17:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2022-11-19 07:17:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 5829. [2022-11-19 07:17:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 3735 states have (on average 1.3247657295850066) internal successors, (4948), 3807 states have internal predecessors, (4948), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 541 states have return successors, (1581), 1535 states have call predecessors, (1581), 1551 states have call successors, (1581) [2022-11-19 07:17:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 8081 transitions. [2022-11-19 07:17:15,628 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 8081 transitions. Word has length 148 [2022-11-19 07:17:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:15,630 INFO L495 AbstractCegarLoop]: Abstraction has 5829 states and 8081 transitions. [2022-11-19 07:17:15,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:17:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 8081 transitions. [2022-11-19 07:17:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-19 07:17:15,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:15,649 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:15,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:15,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:15,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:15,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:15,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2073838240, now seen corresponding path program 1 times [2022-11-19 07:17:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:15,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75546933] [2022-11-19 07:17:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:15,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-19 07:17:16,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:16,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75546933] [2022-11-19 07:17:16,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75546933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:16,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073442802] [2022-11-19 07:17:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:16,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:16,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:16,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:16,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:17:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:17,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:17:17,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-19 07:17:17,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:17,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073442802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:17,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:17:17,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-19 07:17:17,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211598826] [2022-11-19 07:17:17,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:17,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:17:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:17:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:17:17,955 INFO L87 Difference]: Start difference. First operand 5829 states and 8081 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:17:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:24,441 INFO L93 Difference]: Finished difference Result 11728 states and 16282 transitions. [2022-11-19 07:17:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:17:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2022-11-19 07:17:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:24,479 INFO L225 Difference]: With dead ends: 11728 [2022-11-19 07:17:24,479 INFO L226 Difference]: Without dead ends: 5919 [2022-11-19 07:17:24,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:17:24,496 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1095 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:24,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 1818 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-19 07:17:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2022-11-19 07:17:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 5835. [2022-11-19 07:17:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5835 states, 3739 states have (on average 1.32281358652046) internal successors, (4946), 3811 states have internal predecessors, (4946), 1554 states have call successors, (1554), 538 states have call predecessors, (1554), 541 states have return successors, (1563), 1537 states have call predecessors, (1563), 1553 states have call successors, (1563) [2022-11-19 07:17:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 8063 transitions. [2022-11-19 07:17:24,771 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 8063 transitions. Word has length 149 [2022-11-19 07:17:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:24,772 INFO L495 AbstractCegarLoop]: Abstraction has 5835 states and 8063 transitions. [2022-11-19 07:17:24,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:17:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 8063 transitions. [2022-11-19 07:17:24,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-19 07:17:24,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:24,789 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:17:24,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:25,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:25,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2074738069, now seen corresponding path program 1 times [2022-11-19 07:17:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:25,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698948376] [2022-11-19 07:17:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:25,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-19 07:17:25,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:25,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698948376] [2022-11-19 07:17:25,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698948376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:25,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:25,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:17:25,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715307408] [2022-11-19 07:17:25,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:25,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:17:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:25,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:17:25,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:17:25,374 INFO L87 Difference]: Start difference. First operand 5835 states and 8063 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:17:30,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:30,437 INFO L93 Difference]: Finished difference Result 19997 states and 29550 transitions. [2022-11-19 07:17:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:17:30,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 196 [2022-11-19 07:17:30,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:30,509 INFO L225 Difference]: With dead ends: 19997 [2022-11-19 07:17:30,509 INFO L226 Difference]: Without dead ends: 14182 [2022-11-19 07:17:30,535 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 07:17:30,536 INFO L413 NwaCegarLoop]: 1458 mSDtfsCounter, 1221 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:30,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1411 Valid, 3987 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-19 07:17:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14182 states. [2022-11-19 07:17:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14182 to 5843. [2022-11-19 07:17:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 3747 states have (on average 1.3221243661595943) internal successors, (4954), 3819 states have internal predecessors, (4954), 1554 states have call successors, (1554), 538 states have call predecessors, (1554), 541 states have return successors, (1563), 1537 states have call predecessors, (1563), 1553 states have call successors, (1563) [2022-11-19 07:17:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8071 transitions. [2022-11-19 07:17:31,122 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 8071 transitions. Word has length 196 [2022-11-19 07:17:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:31,123 INFO L495 AbstractCegarLoop]: Abstraction has 5843 states and 8071 transitions. [2022-11-19 07:17:31,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:17:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 8071 transitions. [2022-11-19 07:17:31,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-19 07:17:31,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:31,140 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:17:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:17:31,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:31,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1146032297, now seen corresponding path program 1 times [2022-11-19 07:17:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:31,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470879785] [2022-11-19 07:17:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:31,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-11-19 07:17:31,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:31,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470879785] [2022-11-19 07:17:31,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470879785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:31,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121895861] [2022-11-19 07:17:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:31,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:31,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:31,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:31,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:17:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:32,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:17:32,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-19 07:17:33,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:33,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121895861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:33,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:17:33,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:17:33,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211874759] [2022-11-19 07:17:33,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:33,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:17:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:33,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:17:33,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:17:33,188 INFO L87 Difference]: Start difference. First operand 5843 states and 8071 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 07:17:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:41,486 INFO L93 Difference]: Finished difference Result 23000 states and 33041 transitions. [2022-11-19 07:17:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:17:41,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 218 [2022-11-19 07:17:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:41,603 INFO L225 Difference]: With dead ends: 23000 [2022-11-19 07:17:41,603 INFO L226 Difference]: Without dead ends: 22995 [2022-11-19 07:17:41,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:17:41,620 INFO L413 NwaCegarLoop]: 1868 mSDtfsCounter, 2576 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2668 SdHoareTripleChecker+Valid, 4591 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:41,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2668 Valid, 4591 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 07:17:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22995 states. [2022-11-19 07:17:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22995 to 17471. [2022-11-19 07:17:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17471 states, 11203 states have (on average 1.322592162813532) internal successors, (14817), 11427 states have internal predecessors, (14817), 4646 states have call successors, (4646), 1610 states have call predecessors, (4646), 1621 states have return successors, (4675), 4589 states have call predecessors, (4675), 4645 states have call successors, (4675) [2022-11-19 07:17:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17471 states to 17471 states and 24138 transitions. [2022-11-19 07:17:42,946 INFO L78 Accepts]: Start accepts. Automaton has 17471 states and 24138 transitions. Word has length 218 [2022-11-19 07:17:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:42,947 INFO L495 AbstractCegarLoop]: Abstraction has 17471 states and 24138 transitions. [2022-11-19 07:17:42,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 07:17:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 17471 states and 24138 transitions. [2022-11-19 07:17:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-19 07:17:42,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:42,990 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:43,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:43,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:43,200 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:43,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:43,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2042618625, now seen corresponding path program 1 times [2022-11-19 07:17:43,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:43,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833019544] [2022-11-19 07:17:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-19 07:17:43,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:43,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833019544] [2022-11-19 07:17:43,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833019544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:43,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:43,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:17:43,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698300687] [2022-11-19 07:17:43,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:43,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:17:43,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:43,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:17:43,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:17:43,474 INFO L87 Difference]: Start difference. First operand 17471 states and 24138 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 07:17:46,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:46,089 INFO L93 Difference]: Finished difference Result 27047 states and 37361 transitions. [2022-11-19 07:17:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:46,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 221 [2022-11-19 07:17:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:46,128 INFO L225 Difference]: With dead ends: 27047 [2022-11-19 07:17:46,129 INFO L226 Difference]: Without dead ends: 9593 [2022-11-19 07:17:46,174 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 07:17:46,174 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 5 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:46,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1621 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 07:17:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9593 states. [2022-11-19 07:17:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9593 to 9586. [2022-11-19 07:17:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9586 states, 6143 states have (on average 1.3237831678333063) internal successors, (8132), 6263 states have internal predecessors, (8132), 2545 states have call successors, (2545), 892 states have call predecessors, (2545), 897 states have return successors, (2559), 2514 states have call predecessors, (2559), 2544 states have call successors, (2559) [2022-11-19 07:17:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9586 states to 9586 states and 13236 transitions. [2022-11-19 07:17:46,751 INFO L78 Accepts]: Start accepts. Automaton has 9586 states and 13236 transitions. Word has length 221 [2022-11-19 07:17:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:46,752 INFO L495 AbstractCegarLoop]: Abstraction has 9586 states and 13236 transitions. [2022-11-19 07:17:46,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 07:17:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9586 states and 13236 transitions. [2022-11-19 07:17:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-19 07:17:46,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:46,787 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:17:46,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:17:46,787 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:46,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:46,788 INFO L85 PathProgramCache]: Analyzing trace with hash 581450946, now seen corresponding path program 1 times [2022-11-19 07:17:46,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:46,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871249357] [2022-11-19 07:17:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-19 07:17:47,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:47,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871249357] [2022-11-19 07:17:47,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871249357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:47,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610809274] [2022-11-19 07:17:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:47,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:47,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:47,479 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:47,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:17:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:48,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 3043 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:17:48,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-19 07:17:48,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:48,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610809274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:48,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:17:48,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-19 07:17:48,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684634269] [2022-11-19 07:17:48,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:48,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:17:48,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:17:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:17:48,701 INFO L87 Difference]: Start difference. First operand 9586 states and 13236 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-19 07:17:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:51,848 INFO L93 Difference]: Finished difference Result 17635 states and 24330 transitions. [2022-11-19 07:17:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 227 [2022-11-19 07:17:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:51,877 INFO L225 Difference]: With dead ends: 17635 [2022-11-19 07:17:51,877 INFO L226 Difference]: Without dead ends: 7685 [2022-11-19 07:17:51,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:17:51,901 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 767 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:51,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1762 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 07:17:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7685 states. [2022-11-19 07:17:52,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7685 to 7301. [2022-11-19 07:17:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7301 states, 4675 states have (on average 1.3159358288770053) internal successors, (6152), 4771 states have internal predecessors, (6152), 1933 states have call successors, (1933), 687 states have call predecessors, (1933), 692 states have return successors, (1947), 1908 states have call predecessors, (1947), 1932 states have call successors, (1947) [2022-11-19 07:17:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 10032 transitions. [2022-11-19 07:17:52,365 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 10032 transitions. Word has length 227 [2022-11-19 07:17:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:52,366 INFO L495 AbstractCegarLoop]: Abstraction has 7301 states and 10032 transitions. [2022-11-19 07:17:52,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-19 07:17:52,366 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 10032 transitions. [2022-11-19 07:17:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-19 07:17:52,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:52,386 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:52,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:52,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 07:17:52,597 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:52,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash 41959112, now seen corresponding path program 1 times [2022-11-19 07:17:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:52,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299897121] [2022-11-19 07:17:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-19 07:17:52,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:52,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299897121] [2022-11-19 07:17:52,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299897121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:52,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:52,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:17:52,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287890700] [2022-11-19 07:17:52,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:52,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:17:52,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:52,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:17:52,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:17:52,831 INFO L87 Difference]: Start difference. First operand 7301 states and 10032 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-19 07:17:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:54,815 INFO L93 Difference]: Finished difference Result 16458 states and 22461 transitions. [2022-11-19 07:17:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:54,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 235 [2022-11-19 07:17:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:54,847 INFO L225 Difference]: With dead ends: 16458 [2022-11-19 07:17:54,847 INFO L226 Difference]: Without dead ends: 9121 [2022-11-19 07:17:54,867 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 07:17:54,868 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 512 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:54,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1612 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 07:17:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9121 states. [2022-11-19 07:17:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9121 to 9016. [2022-11-19 07:17:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 5854 states have (on average 1.3168773488213188) internal successors, (7709), 5990 states have internal predecessors, (7709), 2249 states have call successors, (2249), 901 states have call predecessors, (2249), 912 states have return successors, (2290), 2200 states have call predecessors, (2290), 2248 states have call successors, (2290) [2022-11-19 07:17:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 12248 transitions. [2022-11-19 07:17:55,402 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 12248 transitions. Word has length 235 [2022-11-19 07:17:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:55,403 INFO L495 AbstractCegarLoop]: Abstraction has 9016 states and 12248 transitions. [2022-11-19 07:17:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-19 07:17:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 12248 transitions. [2022-11-19 07:17:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-19 07:17:55,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:55,416 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:55,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:17:55,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash -774143782, now seen corresponding path program 2 times [2022-11-19 07:17:55,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:55,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97705842] [2022-11-19 07:17:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:55,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-19 07:17:56,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:56,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97705842] [2022-11-19 07:17:56,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97705842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350290378] [2022-11-19 07:17:56,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:17:56,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:56,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:56,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:56,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:17:57,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:17:57,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:17:57,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:17:57,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-19 07:17:57,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:57,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350290378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:57,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:17:57,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-19 07:17:57,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874912498] [2022-11-19 07:17:57,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:57,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:17:57,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:57,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:17:57,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:17:57,095 INFO L87 Difference]: Start difference. First operand 9016 states and 12248 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 07:17:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:59,934 INFO L93 Difference]: Finished difference Result 18014 states and 24542 transitions. [2022-11-19 07:17:59,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:17:59,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 235 [2022-11-19 07:17:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:59,969 INFO L225 Difference]: With dead ends: 18014 [2022-11-19 07:17:59,969 INFO L226 Difference]: Without dead ends: 9092 [2022-11-19 07:17:59,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:17:59,993 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 2 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:59,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3217 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:18:00,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9092 states. [2022-11-19 07:18:00,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9092 to 9064. [2022-11-19 07:18:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9064 states, 5890 states have (on average 1.3149405772495755) internal successors, (7745), 6026 states have internal predecessors, (7745), 2249 states have call successors, (2249), 901 states have call predecessors, (2249), 924 states have return successors, (2309), 2212 states have call predecessors, (2309), 2248 states have call successors, (2309) [2022-11-19 07:18:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9064 states to 9064 states and 12303 transitions. [2022-11-19 07:18:00,654 INFO L78 Accepts]: Start accepts. Automaton has 9064 states and 12303 transitions. Word has length 235 [2022-11-19 07:18:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:00,654 INFO L495 AbstractCegarLoop]: Abstraction has 9064 states and 12303 transitions. [2022-11-19 07:18:00,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 07:18:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 9064 states and 12303 transitions. [2022-11-19 07:18:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-19 07:18:00,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:00,668 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:00,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:00,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:00,878 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:00,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1689894957, now seen corresponding path program 1 times [2022-11-19 07:18:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:00,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512272384] [2022-11-19 07:18:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-19 07:18:01,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:01,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512272384] [2022-11-19 07:18:01,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512272384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:01,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455238680] [2022-11-19 07:18:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:01,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:01,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:01,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:01,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:18:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:02,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:18:02,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 108 proven. 15 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-19 07:18:03,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:18:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-19 07:18:04,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455238680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:18:04,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [147670861] [2022-11-19 07:18:04,159 INFO L159 IcfgInterpreter]: Started Sifa with 156 locations of interest [2022-11-19 07:18:04,160 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:18:04,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:18:04,169 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:18:04,170 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:18:06,869 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 07:18:07,126 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 07:18:07,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:07,589 INFO L217 Elim1Store]: Index analysis took 112 ms [2022-11-19 07:18:09,544 INFO L321 Elim1Store]: treesize reduction 560, result has 47.4 percent of original size [2022-11-19 07:18:09,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1598 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 56 case distinctions, treesize of input 292 treesize of output 686 [2022-11-19 07:18:10,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:10,720 INFO L217 Elim1Store]: Index analysis took 119 ms [2022-11-19 07:18:13,539 INFO L321 Elim1Store]: treesize reduction 1008, result has 33.4 percent of original size [2022-11-19 07:18:13,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 59 select indices, 59 select index equivalence classes, 1655 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 112 case distinctions, treesize of input 302 treesize of output 697 [2022-11-19 07:18:19,286 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 07:18:19,293 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 07:18:19,300 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 07:18:21,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:21,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 58 select indices, 58 select index equivalence classes, 1654 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 175 [2022-11-19 07:18:22,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:22,531 INFO L217 Elim1Store]: Index analysis took 215 ms [2022-11-19 07:18:22,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 152 select indices, 152 select index equivalence classes, 4241 disjoint index pairs (out of 11476 index pairs), introduced 152 new quantified variables, introduced 0 case distinctions, treesize of input 1281 treesize of output 457 [2022-11-19 07:18:23,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:23,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 59 select indices, 59 select index equivalence classes, 1711 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 178 [2022-11-19 07:18:29,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:29,766 INFO L217 Elim1Store]: Index analysis took 177 ms [2022-11-19 07:18:29,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 152 select indices, 152 select index equivalence classes, 4241 disjoint index pairs (out of 11476 index pairs), introduced 152 new quantified variables, introduced 0 case distinctions, treesize of input 1281 treesize of output 457 [2022-11-19 07:18:30,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:30,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 58 select indices, 58 select index equivalence classes, 1654 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 175 [2022-11-19 07:18:30,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:18:30,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 59 select indices, 59 select index equivalence classes, 1711 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 178 [2022-11-19 07:18:36,499 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 07:18:36,532 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 07:18:36,556 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 07:18:37,879 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 07:18:37,905 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 07:18:37,933 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 07:18:44,751 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 220 for LOIs [2022-11-19 07:18:45,109 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 07:18:45,213 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 07:18:45,238 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 07:18:47,043 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 248 for LOIs [2022-11-19 07:18:47,278 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:19:31,658 WARN L233 SmtUtils]: Spent 43.90s on a formula simplification. DAG size of input: 1801 DAG size of output: 1687 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:01,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [147670861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:01,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:20:01,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [5, 7, 7] total 35 [2022-11-19 07:20:01,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061744585] [2022-11-19 07:20:01,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:01,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 07:20:01,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:01,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 07:20:01,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:20:01,565 INFO L87 Difference]: Start difference. First operand 9064 states and 12303 transitions. Second operand has 22 states, 14 states have (on average 8.0) internal successors, (112), 12 states have internal predecessors, (112), 8 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-11-19 07:20:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:46,876 INFO L93 Difference]: Finished difference Result 18109 states and 24586 transitions. [2022-11-19 07:20:46,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 07:20:46,876 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 14 states have (on average 8.0) internal successors, (112), 12 states have internal predecessors, (112), 8 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 239 [2022-11-19 07:20:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:46,901 INFO L225 Difference]: With dead ends: 18109 [2022-11-19 07:20:46,901 INFO L226 Difference]: Without dead ends: 9067 [2022-11-19 07:20:46,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 91.9s TimeCoverageRelationStatistics Valid=310, Invalid=1852, Unknown=0, NotChecked=0, Total=2162 [2022-11-19 07:20:46,967 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 23 mSDsluCounter, 12113 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12909 SdHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 546 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:46,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 12909 Invalid, 4677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 4115 Invalid, 0 Unknown, 546 Unchecked, 27.3s Time] [2022-11-19 07:20:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9067 states. [2022-11-19 07:20:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9067 to 9065. [2022-11-19 07:20:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 5891 states have (on average 1.3148871159395688) internal successors, (7746), 6027 states have internal predecessors, (7746), 2249 states have call successors, (2249), 901 states have call predecessors, (2249), 924 states have return successors, (2309), 2212 states have call predecessors, (2309), 2248 states have call successors, (2309) [2022-11-19 07:20:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 12304 transitions. [2022-11-19 07:20:47,525 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 12304 transitions. Word has length 239 [2022-11-19 07:20:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:47,525 INFO L495 AbstractCegarLoop]: Abstraction has 9065 states and 12304 transitions. [2022-11-19 07:20:47,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 14 states have (on average 8.0) internal successors, (112), 12 states have internal predecessors, (112), 8 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-11-19 07:20:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 12304 transitions. [2022-11-19 07:20:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-19 07:20:47,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:47,538 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:47,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:47,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 07:20:47,749 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:47,750 INFO L85 PathProgramCache]: Analyzing trace with hash 318405196, now seen corresponding path program 1 times [2022-11-19 07:20:47,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:47,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393704752] [2022-11-19 07:20:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:47,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-19 07:20:48,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:48,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393704752] [2022-11-19 07:20:48,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393704752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:20:48,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514679972] [2022-11-19 07:20:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:48,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:20:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:48,811 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:20:48,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:20:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:49,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 3051 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:20:49,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 108 proven. 15 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-19 07:20:50,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:20:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-19 07:20:50,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514679972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:20:50,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1176901702] [2022-11-19 07:20:50,864 INFO L159 IcfgInterpreter]: Started Sifa with 156 locations of interest [2022-11-19 07:20:50,865 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:20:50,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:20:50,866 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:20:50,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:20:53,135 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 07:20:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:20:55,255 INFO L321 Elim1Store]: treesize reduction 560, result has 47.4 percent of original size [2022-11-19 07:20:55,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1598 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 56 case distinctions, treesize of input 292 treesize of output 686 [2022-11-19 07:20:56,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:20:56,167 INFO L217 Elim1Store]: Index analysis took 178 ms [2022-11-19 07:20:58,907 INFO L321 Elim1Store]: treesize reduction 1008, result has 33.4 percent of original size [2022-11-19 07:20:58,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 59 select indices, 59 select index equivalence classes, 1655 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 112 case distinctions, treesize of input 302 treesize of output 697 [2022-11-19 07:20:59,412 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 07:21:03,312 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 07:21:03,319 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 07:21:03,326 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 07:21:05,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 58 select indices, 58 select index equivalence classes, 1654 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 175 [2022-11-19 07:21:05,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:05,614 INFO L217 Elim1Store]: Index analysis took 157 ms [2022-11-19 07:21:05,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 152 select indices, 152 select index equivalence classes, 4241 disjoint index pairs (out of 11476 index pairs), introduced 152 new quantified variables, introduced 0 case distinctions, treesize of input 1281 treesize of output 457 [2022-11-19 07:21:06,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:06,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 59 select indices, 59 select index equivalence classes, 1711 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 178 [2022-11-19 07:21:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:10,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 58 select indices, 58 select index equivalence classes, 1654 disjoint index pairs (out of 1653 index pairs), introduced 58 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 175 [2022-11-19 07:21:10,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:10,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 59 select indices, 59 select index equivalence classes, 1711 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 178 [2022-11-19 07:21:11,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:11,925 INFO L217 Elim1Store]: Index analysis took 181 ms [2022-11-19 07:21:11,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 152 select indices, 152 select index equivalence classes, 4241 disjoint index pairs (out of 11476 index pairs), introduced 152 new quantified variables, introduced 0 case distinctions, treesize of input 1281 treesize of output 457 [2022-11-19 07:21:18,979 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 11 treesize of output 7 [2022-11-19 07:21:18,998 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 11 treesize of output 7 [2022-11-19 07:21:19,022 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 13 treesize of output 9 [2022-11-19 07:21:19,413 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-19 07:21:19,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 462 treesize of output 465 [2022-11-19 07:21:19,483 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:21:19,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 456 treesize of output 459 [2022-11-19 07:21:19,550 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:21:19,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 452 treesize of output 455 [2022-11-19 07:21:20,499 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 14 treesize of output 10 [2022-11-19 07:21:20,531 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 14 treesize of output 10 [2022-11-19 07:21:20,555 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 16 treesize of output 12 [2022-11-19 07:21:29,973 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 07:21:30,013 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 07:21:30,081 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 07:21:34,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:21:34,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 07:21:34,569 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$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) 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.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) 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 07:21:34,574 INFO L158 Benchmark]: Toolchain (without parser) took 287335.43ms. Allocated memory was 102.8MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 57.2MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-11-19 07:21:34,574 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 83.4MB in the beginning and 83.2MB in the end (delta: 143.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:21:34,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2092.20ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 57.0MB in the beginning and 61.9MB in the end (delta: -4.9MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2022-11-19 07:21:34,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 158.16ms. Allocated memory is still 132.1MB. Free memory was 61.9MB in the beginning and 46.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:21:34,575 INFO L158 Benchmark]: Boogie Preprocessor took 192.27ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 46.6MB in the beginning and 121.9MB in the end (delta: -75.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2022-11-19 07:21:34,575 INFO L158 Benchmark]: RCFGBuilder took 3913.90ms. Allocated memory was 195.0MB in the beginning and 289.4MB in the end (delta: 94.4MB). Free memory was 121.9MB in the beginning and 139.3MB in the end (delta: -17.4MB). Peak memory consumption was 90.9MB. Max. memory is 16.1GB. [2022-11-19 07:21:34,576 INFO L158 Benchmark]: TraceAbstraction took 280973.10ms. Allocated memory was 289.4MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 138.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2022-11-19 07:21:34,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 83.4MB in the beginning and 83.2MB in the end (delta: 143.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2092.20ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 57.0MB in the beginning and 61.9MB in the end (delta: -4.9MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 158.16ms. Allocated memory is still 132.1MB. Free memory was 61.9MB in the beginning and 46.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 192.27ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 46.6MB in the beginning and 121.9MB in the end (delta: -75.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * RCFGBuilder took 3913.90ms. Allocated memory was 195.0MB in the beginning and 289.4MB in the end (delta: 94.4MB). Free memory was 121.9MB in the beginning and 139.3MB in the end (delta: -17.4MB). Peak memory consumption was 90.9MB. Max. memory is 16.1GB. * TraceAbstraction took 280973.10ms. Allocated memory was 289.4MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 138.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.5GB. 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 07:21:34,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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_96475715-e213-4ca8-bc32-9f8526863675/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 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d --- 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 07:21:36,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:21:36,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:21:36,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:21:36,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:21:36,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:21:36,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:21:36,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:21:36,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:21:36,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:21:36,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:21:36,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:21:36,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:21:36,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:21:36,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:21:36,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:21:36,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:21:36,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:21:37,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:21:37,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:21:37,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:21:37,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:21:37,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:21:37,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:21:37,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:21:37,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:21:37,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:21:37,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:21:37,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:21:37,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:21:37,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:21:37,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:21:37,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:21:37,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:21:37,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:21:37,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:21:37,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:21:37,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:21:37,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:21:37,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:21:37,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:21:37,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:21:37,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:21:37,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:21:37,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:21:37,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:21:37,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:21:37,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:21:37,088 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:21:37,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:21:37,088 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:21:37,089 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:21:37,090 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:21:37,090 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:21:37,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:21:37,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:21:37,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:21:37,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:21:37,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:21:37,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:21:37,094 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:21:37,094 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:21:37,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:21:37,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:21:37,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:21:37,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:21:37,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:21:37,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:21:37,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:21:37,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:21:37,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:21:37,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:21:37,097 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:21:37,097 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:21:37,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:21:37,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:21:37,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:21:37,098 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_96475715-e213-4ca8-bc32-9f8526863675/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 549c0f0e85f506f59a54b746c0743ded562d36f784f1b0fcb4bf7d5e1672332d [2022-11-19 07:21:37,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:21:37,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:21:37,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:21:37,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:21:37,607 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:21:37,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-11-19 07:21:37,693 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data/393a71ad7/471a166bbcb7485b8b191fb424551bc8/FLAG999ad81e7 [2022-11-19 07:21:38,562 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:21:38,563 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-11-19 07:21:38,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data/393a71ad7/471a166bbcb7485b8b191fb424551bc8/FLAG999ad81e7 [2022-11-19 07:21:39,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/data/393a71ad7/471a166bbcb7485b8b191fb424551bc8 [2022-11-19 07:21:39,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:21:39,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:21:39,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:21:39,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:21:39,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:21:39,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:21:39" (1/1) ... [2022-11-19 07:21:39,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3145ad44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:39, skipping insertion in model container [2022-11-19 07:21:39,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:21:39" (1/1) ... [2022-11-19 07:21:39,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:21:39,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:21:40,040 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_96475715-e213-4ca8-bc32-9f8526863675/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-11-19 07:21:40,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:21:40,910 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:21:40,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:21:41,103 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_96475715-e213-4ca8-bc32-9f8526863675/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-11-19 07:21:41,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:21:41,354 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:21:41,524 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_96475715-e213-4ca8-bc32-9f8526863675/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i[160575,160588] [2022-11-19 07:21:41,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:21:41,901 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:21:41,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41 WrapperNode [2022-11-19 07:21:41,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:21:41,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:21:41,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:21:41,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:21:41,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,151 INFO L138 Inliner]: procedures = 212, calls = 1071, calls flagged for inlining = 87, calls inlined = 80, statements flattened = 2359 [2022-11-19 07:21:42,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:21:42,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:21:42,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:21:42,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:21:42,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,430 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:21:42,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:21:42,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:21:42,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:21:42,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (1/1) ... [2022-11-19 07:21:42,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:21:42,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:21:42,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:21:42,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:21:42,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:21:42,553 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 07:21:42,554 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 07:21:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-19 07:21:42,554 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-19 07:21:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 07:21:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:21:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:21:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-19 07:21:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:21:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:21:42,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:21:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-19 07:21:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-19 07:21:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:21:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:21:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:21:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:21:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:21:42,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:21:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure pull_skb [2022-11-19 07:21:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure pull_skb [2022-11-19 07:21:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-19 07:21:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-19 07:21:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure free_skb_pool [2022-11-19 07:21:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure free_skb_pool [2022-11-19 07:21:42,558 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-19 07:21:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-19 07:21:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:21:42,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:21:42,559 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 07:21:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 07:21:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 07:21:42,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 07:21:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 07:21:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 07:21:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:21:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:21:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:21:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:21:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:21:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:21:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 07:21:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 07:21:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:21:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure fill_skb_pool [2022-11-19 07:21:42,563 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_skb_pool [2022-11-19 07:21:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:21:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:21:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:21:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 07:21:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 07:21:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:21:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:21:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:21:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:21:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_set_mac_address [2022-11-19 07:21:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_set_mac_address [2022-11-19 07:21:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 07:21:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 07:21:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 07:21:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:21:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:21:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:21:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-19 07:21:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:21:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 07:21:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 07:21:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_set_multicast [2022-11-19 07:21:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_set_multicast [2022-11-19 07:21:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 07:21:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 07:21:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:21:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:21:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-19 07:21:42,570 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-19 07:21:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:21:42,570 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:21:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 07:21:42,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 07:21:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:21:42,571 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:21:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2022-11-19 07:21:42,572 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2022-11-19 07:21:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure __printk_ratelimit [2022-11-19 07:21:42,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __printk_ratelimit [2022-11-19 07:21:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-19 07:21:42,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-19 07:21:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:21:42,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:21:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_tx_timeout [2022-11-19 07:21:42,574 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_tx_timeout [2022-11-19 07:21:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:21:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:21:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_ioctl [2022-11-19 07:21:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_ioctl [2022-11-19 07:21:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:21:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:21:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 07:21:42,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 07:21:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:21:42,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:21:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:21:42,577 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:21:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 07:21:42,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 07:21:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:21:42,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:21:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_reset [2022-11-19 07:21:42,579 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_reset [2022-11-19 07:21:42,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-19 07:21:42,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-19 07:21:42,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-19 07:21:42,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-19 07:21:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:21:42,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:21:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8150_disconnect [2022-11-19 07:21:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8150_disconnect [2022-11-19 07:21:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:21:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-11-19 07:21:42,592 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-11-19 07:21:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:21:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:21:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-19 07:21:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-19 07:21:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-19 07:21:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-19 07:21:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-19 07:21:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-19 07:21:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-19 07:21:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 07:21:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 07:21:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2022-11-19 07:21:42,595 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2022-11-19 07:21:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:21:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:21:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-19 07:21:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2022-11-19 07:21:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2022-11-19 07:21:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:21:42,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:21:43,293 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:21:43,299 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:21:43,531 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:22:06,282 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:22:06,300 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:22:06,301 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:22:06,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:22:06 BoogieIcfgContainer [2022-11-19 07:22:06,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:22:06,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:22:06,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:22:06,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:22:06,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:21:39" (1/3) ... [2022-11-19 07:22:06,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6c030d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:22:06, skipping insertion in model container [2022-11-19 07:22:06,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:41" (2/3) ... [2022-11-19 07:22:06,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6c030d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:22:06, skipping insertion in model container [2022-11-19 07:22:06,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:22:06" (3/3) ... [2022-11-19 07:22:06,314 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--rtl8150.ko-entry_point.cil.out.i [2022-11-19 07:22:06,333 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:22:06,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:22:06,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:22:06,418 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;@4fb45a1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:22:06,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:22:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 838 states, 594 states have (on average 1.3265993265993266) internal successors, (788), 610 states have internal predecessors, (788), 188 states have call successors, (188), 55 states have call predecessors, (188), 54 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) [2022-11-19 07:22:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 07:22:06,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:06,443 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:06,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash -220762338, now seen corresponding path program 1 times [2022-11-19 07:22:06,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:06,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447947781] [2022-11-19 07:22:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:06,469 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 07:22:06,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:06,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:06,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:07,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:22:07,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-19 07:22:07,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:07,595 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:07,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447947781] [2022-11-19 07:22:07,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447947781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:07,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:22:07,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:22:07,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042480520] [2022-11-19 07:22:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:07,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:22:07,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:07,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:22:07,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:22:07,672 INFO L87 Difference]: Start difference. First operand has 838 states, 594 states have (on average 1.3265993265993266) internal successors, (788), 610 states have internal predecessors, (788), 188 states have call successors, (188), 55 states have call predecessors, (188), 54 states have return successors, (183), 181 states have call predecessors, (183), 183 states have call successors, (183) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 07:22:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:07,899 INFO L93 Difference]: Finished difference Result 1672 states and 2349 transitions. [2022-11-19 07:22:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:22:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-11-19 07:22:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:07,926 INFO L225 Difference]: With dead ends: 1672 [2022-11-19 07:22:07,926 INFO L226 Difference]: Without dead ends: 827 [2022-11-19 07:22:07,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 07:22:07,939 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 0 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:07,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2294 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:22:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-19 07:22:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2022-11-19 07:22:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 590 states have (on average 1.305084745762712) internal successors, (770), 599 states have internal predecessors, (770), 183 states have call successors, (183), 54 states have call predecessors, (183), 53 states have return successors, (182), 180 states have call predecessors, (182), 182 states have call successors, (182) [2022-11-19 07:22:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1135 transitions. [2022-11-19 07:22:08,088 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1135 transitions. Word has length 56 [2022-11-19 07:22:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:08,090 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1135 transitions. [2022-11-19 07:22:08,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 07:22:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1135 transitions. [2022-11-19 07:22:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 07:22:08,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:08,095 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:08,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:08,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:08,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:08,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1123326687, now seen corresponding path program 1 times [2022-11-19 07:22:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589574951] [2022-11-19 07:22:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:08,317 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 07:22:08,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:08,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:08,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:09,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:09,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-19 07:22:09,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-19 07:22:09,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:09,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589574951] [2022-11-19 07:22:09,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589574951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:09,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [182382445] [2022-11-19 07:22:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:09,477 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:09,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:09,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:09,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:22:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:10,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:22:10,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-19 07:22:10,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:10,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [182382445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:10,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:10,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-19 07:22:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053260024] [2022-11-19 07:22:10,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:10,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:22:10,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:22:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:22:10,410 INFO L87 Difference]: Start difference. First operand 827 states and 1135 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 07:22:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:10,785 INFO L93 Difference]: Finished difference Result 2424 states and 3332 transitions. [2022-11-19 07:22:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:22:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-11-19 07:22:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:10,803 INFO L225 Difference]: With dead ends: 2424 [2022-11-19 07:22:10,803 INFO L226 Difference]: Without dead ends: 1616 [2022-11-19 07:22:10,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:22:10,808 INFO L413 NwaCegarLoop]: 1315 mSDtfsCounter, 1087 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:10,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 2430 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:22:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-11-19 07:22:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1616. [2022-11-19 07:22:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1152 states have (on average 1.3081597222222223) internal successors, (1507), 1170 states have internal predecessors, (1507), 357 states have call successors, (357), 107 states have call predecessors, (357), 106 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2022-11-19 07:22:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2220 transitions. [2022-11-19 07:22:11,007 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2220 transitions. Word has length 57 [2022-11-19 07:22:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:11,008 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2220 transitions. [2022-11-19 07:22:11,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-19 07:22:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2220 transitions. [2022-11-19 07:22:11,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:22:11,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:11,021 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, 1, 1, 1, 1] [2022-11-19 07:22:11,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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)] Ended with exit code 0 [2022-11-19 07:22:11,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-19 07:22:11,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:11,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash -490782428, now seen corresponding path program 1 times [2022-11-19 07:22:11,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:11,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777886147] [2022-11-19 07:22:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:11,439 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 07:22:11,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:11,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:11,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:12,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:12,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-19 07:22:12,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-19 07:22:12,643 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:12,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777886147] [2022-11-19 07:22:12,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777886147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:12,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2090074382] [2022-11-19 07:22:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:12,644 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:12,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:12,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-19 07:22:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:13,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:13,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-19 07:22:13,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:13,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2090074382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:13,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:13,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 9 [2022-11-19 07:22:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426989951] [2022-11-19 07:22:13,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:22:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:22:13,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:22:13,748 INFO L87 Difference]: Start difference. First operand 1616 states and 2220 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:22:14,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:14,370 INFO L93 Difference]: Finished difference Result 4807 states and 6630 transitions. [2022-11-19 07:22:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:22:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-19 07:22:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:14,395 INFO L225 Difference]: With dead ends: 4807 [2022-11-19 07:22:14,395 INFO L226 Difference]: Without dead ends: 3204 [2022-11-19 07:22:14,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:22:14,413 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1103 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 5080 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:14,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 5080 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:22:14,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2022-11-19 07:22:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3196. [2022-11-19 07:22:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2276 states have (on average 1.3084358523725834) internal successors, (2978), 2312 states have internal predecessors, (2978), 707 states have call successors, (707), 213 states have call predecessors, (707), 212 states have return successors, (726), 698 states have call predecessors, (726), 706 states have call successors, (726) [2022-11-19 07:22:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4411 transitions. [2022-11-19 07:22:14,656 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4411 transitions. Word has length 67 [2022-11-19 07:22:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:14,658 INFO L495 AbstractCegarLoop]: Abstraction has 3196 states and 4411 transitions. [2022-11-19 07:22:14,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:22:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4411 transitions. [2022-11-19 07:22:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 07:22:14,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:14,678 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2022-11-19 07:22:14,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:14,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:22:15,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:15,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1983955086, now seen corresponding path program 1 times [2022-11-19 07:22:15,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:15,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20723571] [2022-11-19 07:22:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:15,106 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 07:22:15,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:15,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:15,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:16,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:16,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-19 07:22:16,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-19 07:22:16,536 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:16,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20723571] [2022-11-19 07:22:16,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20723571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:16,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1124661107] [2022-11-19 07:22:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:16,537 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:16,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:16,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:16,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-19 07:22:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:17,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:22:17,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 07:22:17,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:17,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1124661107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:17,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:17,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-19 07:22:17,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497415038] [2022-11-19 07:22:17,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:17,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:22:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:22:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:22:17,741 INFO L87 Difference]: Start difference. First operand 3196 states and 4411 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:22:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:18,246 INFO L93 Difference]: Finished difference Result 8245 states and 11329 transitions. [2022-11-19 07:22:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:22:18,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2022-11-19 07:22:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:18,277 INFO L225 Difference]: With dead ends: 8245 [2022-11-19 07:22:18,277 INFO L226 Difference]: Without dead ends: 5068 [2022-11-19 07:22:18,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:22:18,291 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 666 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:18,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 2423 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:22:18,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2022-11-19 07:22:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 5057. [2022-11-19 07:22:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 3575 states have (on average 1.3065734265734266) internal successors, (4671), 3627 states have internal predecessors, (4671), 1120 states have call successors, (1120), 362 states have call predecessors, (1120), 361 states have return successors, (1139), 1107 states have call predecessors, (1139), 1119 states have call successors, (1139) [2022-11-19 07:22:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 6930 transitions. [2022-11-19 07:22:18,664 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 6930 transitions. Word has length 154 [2022-11-19 07:22:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:18,666 INFO L495 AbstractCegarLoop]: Abstraction has 5057 states and 6930 transitions. [2022-11-19 07:22:18,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:22:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 6930 transitions. [2022-11-19 07:22:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-19 07:22:18,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:18,685 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:22:18,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:22:18,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:19,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:19,102 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:19,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1279684267, now seen corresponding path program 1 times [2022-11-19 07:22:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:19,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507899747] [2022-11-19 07:22:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:19,105 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 07:22:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:19,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:19,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:20,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:20,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-19 07:22:20,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-19 07:22:20,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:20,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507899747] [2022-11-19 07:22:20,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507899747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:20,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418749651] [2022-11-19 07:22:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:20,731 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:20,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:20,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:20,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:22:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:21,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:22:21,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-19 07:22:21,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:21,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [418749651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:21,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:21,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-19 07:22:21,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816093333] [2022-11-19 07:22:21,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:21,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:22:21,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:22:21,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:22:21,929 INFO L87 Difference]: Start difference. First operand 5057 states and 6930 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 07:22:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:22,219 INFO L93 Difference]: Finished difference Result 7589 states and 10426 transitions. [2022-11-19 07:22:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:22:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 170 [2022-11-19 07:22:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:22,255 INFO L225 Difference]: With dead ends: 7589 [2022-11-19 07:22:22,255 INFO L226 Difference]: Without dead ends: 5065 [2022-11-19 07:22:22,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:22:22,268 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 5 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:22,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2258 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:22:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5065 states. [2022-11-19 07:22:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5065 to 5065. [2022-11-19 07:22:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5065 states, 3581 states have (on average 1.306059759843619) internal successors, (4677), 3635 states have internal predecessors, (4677), 1120 states have call successors, (1120), 362 states have call predecessors, (1120), 363 states have return successors, (1143), 1107 states have call predecessors, (1143), 1119 states have call successors, (1143) [2022-11-19 07:22:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5065 states to 5065 states and 6940 transitions. [2022-11-19 07:22:22,610 INFO L78 Accepts]: Start accepts. Automaton has 5065 states and 6940 transitions. Word has length 170 [2022-11-19 07:22:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:22,611 INFO L495 AbstractCegarLoop]: Abstraction has 5065 states and 6940 transitions. [2022-11-19 07:22:22,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 07:22:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5065 states and 6940 transitions. [2022-11-19 07:22:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-19 07:22:22,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:22,627 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:22:22,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:22:22,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:23,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:23,036 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:23,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1334219958, now seen corresponding path program 1 times [2022-11-19 07:22:23,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:23,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823456053] [2022-11-19 07:22:23,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:23,038 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 07:22:23,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:23,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:23,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:24,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:24,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-19 07:22:24,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-19 07:22:24,671 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:24,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823456053] [2022-11-19 07:22:24,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823456053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:24,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1812465113] [2022-11-19 07:22:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:24,672 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:24,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:24,687 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:24,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-19 07:22:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:25,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:22:25,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-19 07:22:26,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:26,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1812465113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:26,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:26,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-19 07:22:26,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484142971] [2022-11-19 07:22:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:22:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:22:26,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:22:26,081 INFO L87 Difference]: Start difference. First operand 5065 states and 6940 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:22:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:26,723 INFO L93 Difference]: Finished difference Result 12197 states and 16661 transitions. [2022-11-19 07:22:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:22:26,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2022-11-19 07:22:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:26,772 INFO L225 Difference]: With dead ends: 12197 [2022-11-19 07:22:26,772 INFO L226 Difference]: Without dead ends: 7158 [2022-11-19 07:22:26,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:22:26,794 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 829 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:26,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 2710 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:22:26,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2022-11-19 07:22:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 7147. [2022-11-19 07:22:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 5053 states have (on average 1.3029883237680586) internal successors, (6584), 5125 states have internal predecessors, (6584), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 541 states have return successors, (1581), 1535 states have call predecessors, (1581), 1551 states have call successors, (1581) [2022-11-19 07:22:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9717 transitions. [2022-11-19 07:22:27,292 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9717 transitions. Word has length 172 [2022-11-19 07:22:27,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:27,294 INFO L495 AbstractCegarLoop]: Abstraction has 7147 states and 9717 transitions. [2022-11-19 07:22:27,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:22:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9717 transitions. [2022-11-19 07:22:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-19 07:22:27,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:27,320 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:27,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:22:27,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:27,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:27,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:27,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1841981445, now seen corresponding path program 1 times [2022-11-19 07:22:27,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:27,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685112457] [2022-11-19 07:22:27,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:27,738 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 07:22:27,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:27,740 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:27,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 (13)] Waiting until timeout for monitored process [2022-11-19 07:22:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:29,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:29,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:22:29,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-19 07:22:29,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685112457] [2022-11-19 07:22:29,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685112457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [967128620] [2022-11-19 07:22:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:29,382 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:29,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:29,391 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:29,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 07:22:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:30,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:22:30,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-19 07:22:30,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:30,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [967128620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:30,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:30,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-19 07:22:30,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039745928] [2022-11-19 07:22:30,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:30,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:22:30,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:30,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:22:30,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:22:30,770 INFO L87 Difference]: Start difference. First operand 7147 states and 9717 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:22:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:32,074 INFO L93 Difference]: Finished difference Result 16781 states and 22779 transitions. [2022-11-19 07:22:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:22:32,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 188 [2022-11-19 07:22:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:32,147 INFO L225 Difference]: With dead ends: 16781 [2022-11-19 07:22:32,147 INFO L226 Difference]: Without dead ends: 9660 [2022-11-19 07:22:32,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:22:32,175 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 1052 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 4706 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:32,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 4706 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:22:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9660 states. [2022-11-19 07:22:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9660 to 7155. [2022-11-19 07:22:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7155 states, 5061 states have (on average 1.3025093854969374) internal successors, (6592), 5133 states have internal predecessors, (6592), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 541 states have return successors, (1581), 1535 states have call predecessors, (1581), 1551 states have call successors, (1581) [2022-11-19 07:22:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7155 states to 7155 states and 9725 transitions. [2022-11-19 07:22:32,841 INFO L78 Accepts]: Start accepts. Automaton has 7155 states and 9725 transitions. Word has length 188 [2022-11-19 07:22:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:32,842 INFO L495 AbstractCegarLoop]: Abstraction has 7155 states and 9725 transitions. [2022-11-19 07:22:32,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:22:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7155 states and 9725 transitions. [2022-11-19 07:22:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-19 07:22:32,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:32,863 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:22:32,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:22:33,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:22:33,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:33,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1195197179, now seen corresponding path program 1 times [2022-11-19 07:22:33,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:33,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262476108] [2022-11-19 07:22:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:33,277 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 07:22:33,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:33,279 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:33,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:34,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:34,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-19 07:22:34,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-19 07:22:34,968 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262476108] [2022-11-19 07:22:34,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262476108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1205716682] [2022-11-19 07:22:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:34,969 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:34,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:34,970 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:34,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-19 07:22:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:36,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:22:36,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-19 07:22:36,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:36,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1205716682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:36,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:36,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-19 07:22:36,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799956736] [2022-11-19 07:22:36,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:36,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:22:36,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:36,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:22:36,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:22:36,328 INFO L87 Difference]: Start difference. First operand 7155 states and 9725 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:22:38,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:22:41,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:22:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:41,897 INFO L93 Difference]: Finished difference Result 21797 states and 31284 transitions. [2022-11-19 07:22:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:22:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 239 [2022-11-19 07:22:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:41,959 INFO L225 Difference]: With dead ends: 21797 [2022-11-19 07:22:41,959 INFO L226 Difference]: Without dead ends: 14668 [2022-11-19 07:22:41,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:22:41,983 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 1488 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 191 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 4793 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:41,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 4793 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-11-19 07:22:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2022-11-19 07:22:42,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 7163. [2022-11-19 07:22:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7163 states, 5069 states have (on average 1.3020319589662654) internal successors, (6600), 5141 states have internal predecessors, (6600), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 541 states have return successors, (1581), 1535 states have call predecessors, (1581), 1551 states have call successors, (1581) [2022-11-19 07:22:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 9733 transitions. [2022-11-19 07:22:42,771 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 9733 transitions. Word has length 239 [2022-11-19 07:22:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:42,771 INFO L495 AbstractCegarLoop]: Abstraction has 7163 states and 9733 transitions. [2022-11-19 07:22:42,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:22:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 9733 transitions. [2022-11-19 07:22:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-19 07:22:42,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:42,792 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:22:42,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:22:43,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:43,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:43,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 725626144, now seen corresponding path program 1 times [2022-11-19 07:22:43,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:43,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456785642] [2022-11-19 07:22:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:43,214 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 07:22:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:43,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:43,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:44,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:44,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-19 07:22:44,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:44,969 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 07:22:44,969 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:44,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456785642] [2022-11-19 07:22:44,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456785642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:44,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [471511011] [2022-11-19 07:22:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:44,969 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:44,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:44,971 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:44,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-19 07:22:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:46,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:22:46,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-19 07:22:46,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:46,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [471511011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:46,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:46,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-19 07:22:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789703402] [2022-11-19 07:22:46,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:46,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:22:46,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:22:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:22:46,422 INFO L87 Difference]: Start difference. First operand 7163 states and 9733 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:22:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:47,871 INFO L93 Difference]: Finished difference Result 16825 states and 22823 transitions. [2022-11-19 07:22:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:22:47,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 235 [2022-11-19 07:22:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:47,910 INFO L225 Difference]: With dead ends: 16825 [2022-11-19 07:22:47,910 INFO L226 Difference]: Without dead ends: 9688 [2022-11-19 07:22:47,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:22:47,929 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 1052 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 4711 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:47,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 4711 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:22:47,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9688 states. [2022-11-19 07:22:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9688 to 7163. [2022-11-19 07:22:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7163 states, 5069 states have (on average 1.3020319589662654) internal successors, (6600), 5141 states have internal predecessors, (6600), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 541 states have return successors, (1581), 1535 states have call predecessors, (1581), 1551 states have call successors, (1581) [2022-11-19 07:22:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 9733 transitions. [2022-11-19 07:22:48,677 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 9733 transitions. Word has length 235 [2022-11-19 07:22:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:48,678 INFO L495 AbstractCegarLoop]: Abstraction has 7163 states and 9733 transitions. [2022-11-19 07:22:48,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:22:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 9733 transitions. [2022-11-19 07:22:48,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-19 07:22:48,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:48,695 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:22:48,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-11-19 07:22:48,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:49,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:49,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:49,107 INFO L85 PathProgramCache]: Analyzing trace with hash 964869943, now seen corresponding path program 1 times [2022-11-19 07:22:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:49,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560676601] [2022-11-19 07:22:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:49,109 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 07:22:49,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:49,110 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:49,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:50,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:50,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-19 07:22:50,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-19 07:22:50,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:50,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560676601] [2022-11-19 07:22:50,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560676601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:50,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1068558581] [2022-11-19 07:22:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:50,766 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:50,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-19 07:22:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:52,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:22:52,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-19 07:22:52,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:22:52,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1068558581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:52,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:22:52,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4] total 10 [2022-11-19 07:22:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748196207] [2022-11-19 07:22:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:52,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:22:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:22:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:22:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:22:52,315 INFO L87 Difference]: Start difference. First operand 7163 states and 9733 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 07:22:54,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:22:55,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:55,402 INFO L93 Difference]: Finished difference Result 15295 states and 20984 transitions. [2022-11-19 07:22:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:22:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 263 [2022-11-19 07:22:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:55,435 INFO L225 Difference]: With dead ends: 15295 [2022-11-19 07:22:55,435 INFO L226 Difference]: Without dead ends: 8158 [2022-11-19 07:22:55,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:22:55,453 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 526 mSDsluCounter, 5407 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 6923 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:55,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 6923 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:22:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2022-11-19 07:22:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 7183. [2022-11-19 07:22:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7183 states, 5085 states have (on average 1.3010816125860374) internal successors, (6616), 5157 states have internal predecessors, (6616), 1552 states have call successors, (1552), 538 states have call predecessors, (1552), 545 states have return successors, (1593), 1539 states have call predecessors, (1593), 1551 states have call successors, (1593) [2022-11-19 07:22:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7183 states to 7183 states and 9761 transitions. [2022-11-19 07:22:56,293 INFO L78 Accepts]: Start accepts. Automaton has 7183 states and 9761 transitions. Word has length 263 [2022-11-19 07:22:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:56,294 INFO L495 AbstractCegarLoop]: Abstraction has 7183 states and 9761 transitions. [2022-11-19 07:22:56,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 07:22:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 7183 states and 9761 transitions. [2022-11-19 07:22:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-19 07:22:56,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:56,318 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:22:56,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:56,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:22:56,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:56,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash -413232857, now seen corresponding path program 1 times [2022-11-19 07:22:56,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:22:56,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664792482] [2022-11-19 07:22:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:56,738 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 07:22:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:22:56,740 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:56,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:22:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:58,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:22:58,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-19 07:22:58,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-19 07:22:58,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:22:58,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664792482] [2022-11-19 07:22:58,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664792482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:22:58,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [134671254] [2022-11-19 07:22:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:58,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:22:58,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:22:58,559 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:22:58,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-19 07:22:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:59,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:22:59,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 96 proven. 7 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-19 07:23:00,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-19 07:23:01,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [134671254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:01,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501445801] [2022-11-19 07:23:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:01,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:01,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:01,275 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:23:01,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-19 07:23:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:02,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:02,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 96 proven. 7 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-19 07:23:03,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-19 07:23:03,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501445801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:03,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:23:03,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 10 [2022-11-19 07:23:03,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611294793] [2022-11-19 07:23:03,834 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:23:03,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:23:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:23:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:23:03,837 INFO L87 Difference]: Start difference. First operand 7183 states and 9761 transitions. Second operand has 10 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 4 states have call successors, (96), 3 states have call predecessors, (96), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) [2022-11-19 07:23:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:15,177 INFO L93 Difference]: Finished difference Result 50114 states and 68115 transitions. [2022-11-19 07:23:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:23:15,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 4 states have call successors, (96), 3 states have call predecessors, (96), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) Word has length 269 [2022-11-19 07:23:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:15,388 INFO L225 Difference]: With dead ends: 50114 [2022-11-19 07:23:15,388 INFO L226 Difference]: Without dead ends: 42956 [2022-11-19 07:23:15,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1614 GetRequests, 1601 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:23:15,427 INFO L413 NwaCegarLoop]: 2929 mSDtfsCounter, 7211 mSDsluCounter, 15057 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 1631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7211 SdHoareTripleChecker+Valid, 17986 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1631 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:15,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7211 Valid, 17986 Invalid, 3691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1631 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-19 07:23:15,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42956 states. [2022-11-19 07:23:20,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42956 to 42886. [2022-11-19 07:23:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42886 states, 30348 states have (on average 1.302062738895479) internal successors, (39515), 30796 states have internal predecessors, (39515), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3265 states have return successors, (9523), 9183 states have call predecessors, (9523), 9271 states have call successors, (9523) [2022-11-19 07:23:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42886 states to 42886 states and 58310 transitions. [2022-11-19 07:23:20,382 INFO L78 Accepts]: Start accepts. Automaton has 42886 states and 58310 transitions. Word has length 269 [2022-11-19 07:23:20,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:20,383 INFO L495 AbstractCegarLoop]: Abstraction has 42886 states and 58310 transitions. [2022-11-19 07:23:20,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 4 states have call successors, (96), 3 states have call predecessors, (96), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) [2022-11-19 07:23:20,384 INFO L276 IsEmpty]: Start isEmpty. Operand 42886 states and 58310 transitions. [2022-11-19 07:23:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-19 07:23:20,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:20,688 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:20,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:20,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:21,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:21,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:23:21,318 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1864327142, now seen corresponding path program 1 times [2022-11-19 07:23:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122352615] [2022-11-19 07:23:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:21,321 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 07:23:21,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:21,323 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:23:21,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 (24)] Waiting until timeout for monitored process [2022-11-19 07:23:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:23,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 07:23:23,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-19 07:23:23,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:23,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:23,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122352615] [2022-11-19 07:23:23,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122352615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:23,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:23,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:23:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339148247] [2022-11-19 07:23:23,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:23,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:23:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:23:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:23:23,597 INFO L87 Difference]: Start difference. First operand 42886 states and 58310 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 07:23:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:27,449 INFO L93 Difference]: Finished difference Result 86175 states and 117111 transitions. [2022-11-19 07:23:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:23:27,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) Word has length 272 [2022-11-19 07:23:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:27,647 INFO L225 Difference]: With dead ends: 86175 [2022-11-19 07:23:27,647 INFO L226 Difference]: Without dead ends: 43318 [2022-11-19 07:23:28,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:23:28,031 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 2 mSDsluCounter, 6768 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7898 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:28,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7898 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:23:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43318 states. [2022-11-19 07:23:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43318 to 43030. [2022-11-19 07:23:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43030 states, 30468 states have (on average 1.3008730471314165) internal successors, (39635), 30892 states have internal predecessors, (39635), 9272 states have call successors, (9272), 3218 states have call predecessors, (9272), 3289 states have return successors, (9571), 9231 states have call predecessors, (9571), 9271 states have call successors, (9571) [2022-11-19 07:23:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43030 states to 43030 states and 58478 transitions. [2022-11-19 07:23:32,641 INFO L78 Accepts]: Start accepts. Automaton has 43030 states and 58478 transitions. Word has length 272 [2022-11-19 07:23:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:32,642 INFO L495 AbstractCegarLoop]: Abstraction has 43030 states and 58478 transitions. [2022-11-19 07:23:32,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-19 07:23:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 43030 states and 58478 transitions. [2022-11-19 07:23:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-19 07:23:32,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:32,712 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:23:32,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:32,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:23:32,935 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:32,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1024081098, now seen corresponding path program 2 times [2022-11-19 07:23:32,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:32,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588759011] [2022-11-19 07:23:32,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:23:32,938 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 07:23:32,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:32,939 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 07:23:32,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96475715-e213-4ca8-bc32-9f8526863675/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 (25)] Waiting until timeout for monitored process [2022-11-19 07:23:33,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-19 07:23:33,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:23:33,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:33,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-11-19 07:23:33,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:33,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:23:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588759011] [2022-11-19 07:23:33,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588759011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:33,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:33,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:23:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440825954] [2022-11-19 07:23:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:33,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:23:33,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:23:33,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:23:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:23:33,958 INFO L87 Difference]: Start difference. First operand 43030 states and 58478 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 07:23:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:40,383 INFO L93 Difference]: Finished difference Result 105424 states and 143916 transitions. [2022-11-19 07:23:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:23:40,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 278 [2022-11-19 07:23:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:40,594 INFO L225 Difference]: With dead ends: 105424 [2022-11-19 07:23:40,595 INFO L226 Difference]: Without dead ends: 62423 [2022-11-19 07:23:40,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 276 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 07:23:40,701 INFO L413 NwaCegarLoop]: 1735 mSDtfsCounter, 1560 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:40,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 3925 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:23:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62423 states.