./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:36:52,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:36:52,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:36:52,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:36:52,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:36:52,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:36:52,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:36:52,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:36:52,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:36:52,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:36:52,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:36:52,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:36:52,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:36:52,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:36:52,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:36:52,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:36:52,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:36:52,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:36:52,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:36:52,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:36:53,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:36:53,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:36:53,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:36:53,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:36:53,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:36:53,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:36:53,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:36:53,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:36:53,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:36:53,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:36:53,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:36:53,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:36:53,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:36:53,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:36:53,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:36:53,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:36:53,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:36:53,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:36:53,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:36:53,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:36:53,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:36:53,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:36:53,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:36:53,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:36:53,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:36:53,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:36:53,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:36:53,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:36:53,089 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:36:53,089 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:36:53,089 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:36:53,090 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:36:53,091 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:36:53,091 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:36:53,092 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:36:53,092 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:36:53,092 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:36:53,093 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:36:53,093 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:36:53,093 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:36:53,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:36:53,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:36:53,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:36:53,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:36:53,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:36:53,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:36:53,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:36:53,098 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:36:53,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:36:53,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:36:53,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:36:53,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:53,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:36:53,100 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:36:53,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:36:53,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:36:53,101 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:36:53,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:36:53,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:36:53,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:36:53,103 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_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2022-11-03 01:36:53,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:36:53,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:36:53,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:36:53,466 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:36:53,466 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:36:53,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-11-03 01:36:53,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/data/d05102219/780d6578de1c401ab35834302d6e0b4c/FLAG2462e0eb3 [2022-11-03 01:36:54,607 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:36:54,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-11-03 01:36:54,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/data/d05102219/780d6578de1c401ab35834302d6e0b4c/FLAG2462e0eb3 [2022-11-03 01:36:54,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/data/d05102219/780d6578de1c401ab35834302d6e0b4c [2022-11-03 01:36:54,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:36:54,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:36:54,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:54,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:36:54,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:36:54,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:54" (1/1) ... [2022-11-03 01:36:54,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ef4795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:54, skipping insertion in model container [2022-11-03 01:36:54,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:54" (1/1) ... [2022-11-03 01:36:55,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:36:55,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:36:56,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2022-11-03 01:36:56,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:56,713 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:36:57,128 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2022-11-03 01:36:57,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:57,418 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:36:57,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57 WrapperNode [2022-11-03 01:36:57,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:57,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:57,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:36:57,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:36:57,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,639 INFO L138 Inliner]: procedures = 133, calls = 733, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1375 [2022-11-03 01:36:57,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:57,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:36:57,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:36:57,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:36:57,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:36:57,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:36:57,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:36:57,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:36:57,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (1/1) ... [2022-11-03 01:36:57,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:57,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:36:57,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:36:57,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:36:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 01:36:57,939 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 01:36:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2022-11-03 01:36:57,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2022-11-03 01:36:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:36:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 01:36:57,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 01:36:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:36:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:36:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:36:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 01:36:57,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 01:36:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2022-11-03 01:36:57,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2022-11-03 01:36:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 01:36:57,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 01:36:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:36:57,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:36:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2022-11-03 01:36:57,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2022-11-03 01:36:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-11-03 01:36:57,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-11-03 01:36:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:36:57,942 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:36:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-11-03 01:36:57,943 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-11-03 01:36:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:36:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 01:36:57,943 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 01:36:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-03 01:36:57,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-03 01:36:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 01:36:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 01:36:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 01:36:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 01:36:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2022-11-03 01:36:57,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2022-11-03 01:36:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:36:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-11-03 01:36:57,945 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-11-03 01:36:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:36:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 01:36:57,946 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 01:36:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:36:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:36:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2022-11-03 01:36:57,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2022-11-03 01:36:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-03 01:36:57,948 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-03 01:36:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-03 01:36:57,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-03 01:36:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:36:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 01:36:57,950 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 01:36:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 01:36:57,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 01:36:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-11-03 01:36:57,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-11-03 01:36:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-03 01:36:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-03 01:36:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:36:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:36:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:36:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:36:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 01:36:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 01:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 01:36:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 01:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-11-03 01:36:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-11-03 01:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 01:36:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 01:36:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 01:36:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 01:36:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-03 01:36:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-03 01:36:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-03 01:36:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-03 01:36:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:36:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-03 01:36:57,957 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-03 01:36:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 01:36:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 01:36:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:36:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:36:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:36:58,517 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:36:58,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:36:58,952 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-03 01:36:59,184 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 01:37:01,952 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-11-03 01:37:01,952 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-11-03 01:37:02,025 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:37:02,421 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:37:02,422 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-03 01:37:02,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:02 BoogieIcfgContainer [2022-11-03 01:37:02,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:37:02,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:37:02,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:37:02,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:37:02,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:36:54" (1/3) ... [2022-11-03 01:37:02,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6127f725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:02, skipping insertion in model container [2022-11-03 01:37:02,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:57" (2/3) ... [2022-11-03 01:37:02,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6127f725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:02, skipping insertion in model container [2022-11-03 01:37:02,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:02" (3/3) ... [2022-11-03 01:37:02,448 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-11-03 01:37:02,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:37:02,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:37:02,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:37:02,609 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;@54264b56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:37:02,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:37:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 200 states have (on average 1.38) internal successors, (276), 212 states have internal predecessors, (276), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-03 01:37:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:37:02,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:02,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:02,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:02,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1750355893, now seen corresponding path program 1 times [2022-11-03 01:37:02,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:02,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76707197] [2022-11-03 01:37:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:02,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:03,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76707197] [2022-11-03 01:37:03,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76707197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:03,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:03,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:03,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124771139] [2022-11-03 01:37:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:03,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:37:03,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:03,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:37:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:03,348 INFO L87 Difference]: Start difference. First operand has 327 states, 200 states have (on average 1.38) internal successors, (276), 212 states have internal predecessors, (276), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:07,136 INFO L93 Difference]: Finished difference Result 836 states and 1187 transitions. [2022-11-03 01:37:07,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:37:07,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-03 01:37:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:07,161 INFO L225 Difference]: With dead ends: 836 [2022-11-03 01:37:07,167 INFO L226 Difference]: Without dead ends: 508 [2022-11-03 01:37:07,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:07,188 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 252 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:07,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 810 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 01:37:07,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-03 01:37:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2022-11-03 01:37:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 311 states have (on average 1.3183279742765273) internal successors, (410), 322 states have internal predecessors, (410), 136 states have call successors, (136), 58 states have call predecessors, (136), 56 states have return successors, (132), 126 states have call predecessors, (132), 132 states have call successors, (132) [2022-11-03 01:37:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 678 transitions. [2022-11-03 01:37:07,326 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 678 transitions. Word has length 10 [2022-11-03 01:37:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:07,327 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 678 transitions. [2022-11-03 01:37:07,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 678 transitions. [2022-11-03 01:37:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:37:07,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:07,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:07,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:37:07,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1573313863, now seen corresponding path program 1 times [2022-11-03 01:37:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:07,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37164821] [2022-11-03 01:37:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:07,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:07,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37164821] [2022-11-03 01:37:07,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37164821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:07,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:07,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:07,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76754753] [2022-11-03 01:37:07,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:07,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:37:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:37:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:07,587 INFO L87 Difference]: Start difference. First operand 504 states and 678 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:11,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:11,924 INFO L93 Difference]: Finished difference Result 742 states and 994 transitions. [2022-11-03 01:37:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:37:11,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-03 01:37:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:11,933 INFO L225 Difference]: With dead ends: 742 [2022-11-03 01:37:11,934 INFO L226 Difference]: Without dead ends: 733 [2022-11-03 01:37:11,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:11,936 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 311 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:11,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 819 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 01:37:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-03 01:37:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 728. [2022-11-03 01:37:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 451 states have (on average 1.3082039911308203) internal successors, (590), 463 states have internal predecessors, (590), 195 states have call successors, (195), 84 states have call predecessors, (195), 81 states have return successors, (191), 182 states have call predecessors, (191), 191 states have call successors, (191) [2022-11-03 01:37:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 976 transitions. [2022-11-03 01:37:12,028 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 976 transitions. Word has length 11 [2022-11-03 01:37:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:12,028 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 976 transitions. [2022-11-03 01:37:12,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 976 transitions. [2022-11-03 01:37:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 01:37:12,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:12,034 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:37:12,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:37:12,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:12,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1402781733, now seen corresponding path program 1 times [2022-11-03 01:37:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:12,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407930312] [2022-11-03 01:37:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:37:12,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407930312] [2022-11-03 01:37:12,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407930312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:12,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:12,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792163505] [2022-11-03 01:37:12,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:12,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:37:12,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:12,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:37:12,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:12,334 INFO L87 Difference]: Start difference. First operand 728 states and 976 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:37:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:15,167 INFO L93 Difference]: Finished difference Result 1772 states and 2471 transitions. [2022-11-03 01:37:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:37:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-11-03 01:37:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:15,177 INFO L225 Difference]: With dead ends: 1772 [2022-11-03 01:37:15,178 INFO L226 Difference]: Without dead ends: 1049 [2022-11-03 01:37:15,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:15,182 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 164 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:15,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 757 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 01:37:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2022-11-03 01:37:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1040. [2022-11-03 01:37:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 661 states have (on average 1.3449319213313162) internal successors, (889), 681 states have internal predecessors, (889), 297 states have call successors, (297), 84 states have call predecessors, (297), 81 states have return successors, (293), 278 states have call predecessors, (293), 293 states have call successors, (293) [2022-11-03 01:37:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1479 transitions. [2022-11-03 01:37:15,272 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1479 transitions. Word has length 52 [2022-11-03 01:37:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:15,273 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 1479 transitions. [2022-11-03 01:37:15,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:37:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1479 transitions. [2022-11-03 01:37:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:37:15,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:15,277 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:37:15,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:37:15,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1235726526, now seen corresponding path program 1 times [2022-11-03 01:37:15,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:15,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727212910] [2022-11-03 01:37:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:37:16,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:16,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727212910] [2022-11-03 01:37:16,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727212910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:16,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:16,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:37:16,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282691590] [2022-11-03 01:37:16,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:16,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:37:16,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:16,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:37:16,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:37:16,455 INFO L87 Difference]: Start difference. First operand 1040 states and 1479 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-03 01:37:22,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:25,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:27,323 INFO L93 Difference]: Finished difference Result 2286 states and 3302 transitions. [2022-11-03 01:37:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:37:27,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2022-11-03 01:37:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:27,336 INFO L225 Difference]: With dead ends: 2286 [2022-11-03 01:37:27,336 INFO L226 Difference]: Without dead ends: 1502 [2022-11-03 01:37:27,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:37:27,341 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 847 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:27,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1153 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-03 01:37:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-11-03 01:37:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1050. [2022-11-03 01:37:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 668 states have (on average 1.344311377245509) internal successors, (898), 686 states have internal predecessors, (898), 299 states have call successors, (299), 85 states have call predecessors, (299), 82 states have return successors, (295), 282 states have call predecessors, (295), 295 states have call successors, (295) [2022-11-03 01:37:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1492 transitions. [2022-11-03 01:37:27,466 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1492 transitions. Word has length 47 [2022-11-03 01:37:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:27,467 INFO L495 AbstractCegarLoop]: Abstraction has 1050 states and 1492 transitions. [2022-11-03 01:37:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-03 01:37:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1492 transitions. [2022-11-03 01:37:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 01:37:27,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:27,479 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:37:27,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:37:27,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:27,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1390502159, now seen corresponding path program 1 times [2022-11-03 01:37:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:27,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873889331] [2022-11-03 01:37:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:27,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 01:37:28,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:28,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873889331] [2022-11-03 01:37:28,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873889331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:28,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:28,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:37:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826013633] [2022-11-03 01:37:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:28,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:37:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:37:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:37:28,495 INFO L87 Difference]: Start difference. First operand 1050 states and 1492 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 01:37:30,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:38,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:47,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:50,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:51,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:51,630 INFO L93 Difference]: Finished difference Result 2328 states and 3431 transitions. [2022-11-03 01:37:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:37:51,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 53 [2022-11-03 01:37:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:51,646 INFO L225 Difference]: With dead ends: 2328 [2022-11-03 01:37:51,647 INFO L226 Difference]: Without dead ends: 2323 [2022-11-03 01:37:51,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:37:51,650 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1259 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:51,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 2008 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2022-11-03 01:37:51,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2022-11-03 01:37:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1769. [2022-11-03 01:37:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1123 states have (on average 1.3437221727515583) internal successors, (1509), 1155 states have internal predecessors, (1509), 507 states have call successors, (507), 142 states have call predecessors, (507), 138 states have return successors, (523), 479 states have call predecessors, (523), 503 states have call successors, (523) [2022-11-03 01:37:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2539 transitions. [2022-11-03 01:37:51,818 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2539 transitions. Word has length 53 [2022-11-03 01:37:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:51,819 INFO L495 AbstractCegarLoop]: Abstraction has 1769 states and 2539 transitions. [2022-11-03 01:37:51,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 01:37:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2539 transitions. [2022-11-03 01:37:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:37:51,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:51,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:51,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:37:51,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1172846488, now seen corresponding path program 1 times [2022-11-03 01:37:51,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:51,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138843184] [2022-11-03 01:37:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:51,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:37:52,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:52,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138843184] [2022-11-03 01:37:52,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138843184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:52,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:52,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:52,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846137237] [2022-11-03 01:37:52,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:52,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:37:52,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:52,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:37:52,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:52,155 INFO L87 Difference]: Start difference. First operand 1769 states and 2539 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:37:56,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:57,270 INFO L93 Difference]: Finished difference Result 3025 states and 4359 transitions. [2022-11-03 01:37:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:37:57,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2022-11-03 01:37:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:57,284 INFO L225 Difference]: With dead ends: 3025 [2022-11-03 01:37:57,284 INFO L226 Difference]: Without dead ends: 1779 [2022-11-03 01:37:57,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:57,291 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:57,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 745 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 01:37:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-11-03 01:37:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1779. [2022-11-03 01:37:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1133 states have (on average 1.3406884377758164) internal successors, (1519), 1165 states have internal predecessors, (1519), 507 states have call successors, (507), 142 states have call predecessors, (507), 138 states have return successors, (523), 479 states have call predecessors, (523), 503 states have call successors, (523) [2022-11-03 01:37:57,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2549 transitions. [2022-11-03 01:37:57,448 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2549 transitions. Word has length 65 [2022-11-03 01:37:57,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:57,449 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2549 transitions. [2022-11-03 01:37:57,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:37:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2549 transitions. [2022-11-03 01:37:57,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 01:37:57,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:57,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:57,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:37:57,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:57,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:57,454 INFO L85 PathProgramCache]: Analyzing trace with hash -178206725, now seen corresponding path program 1 times [2022-11-03 01:37:57,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:57,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375956443] [2022-11-03 01:37:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:57,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:37:57,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:57,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375956443] [2022-11-03 01:37:57,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375956443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:37:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969988816] [2022-11-03 01:37:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:57,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:37:57,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:37:57,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:37:57,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee4f079-2aa8-4d37-a100-3ae5fb1c38a7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:37:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:58,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:37:58,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:37:58,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:37:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:37:58,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969988816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:37:58,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [776179489] [2022-11-03 01:37:58,625 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-03 01:37:58,626 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:37:58,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:37:58,637 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:37:58,638 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:38:00,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 196 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 76 [2022-11-03 01:38:00,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2866 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 351 [2022-11-03 01:38:01,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1308 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 231 [2022-11-03 01:38:22,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:38:22,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:39:35,148 INFO L244 Elim1Store]: Index analysis took 112 ms [2022-11-03 01:39:36,347 INFO L356 Elim1Store]: treesize reduction 97, result has 21.1 percent of original size [2022-11-03 01:39:36,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 48 [2022-11-03 01:39:36,784 INFO L356 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-03 01:39:36,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 64 [2022-11-03 01:39:36,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:36,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:36,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:39:37,002 INFO L356 Elim1Store]: treesize reduction 169, result has 21.4 percent of original size [2022-11-03 01:39:37,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 16 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 111 [2022-11-03 01:39:37,575 INFO L356 Elim1Store]: treesize reduction 344, result has 39.5 percent of original size [2022-11-03 01:39:37,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 116 treesize of output 289 [2022-11-03 01:39:38,717 INFO L356 Elim1Store]: treesize reduction 208, result has 42.4 percent of original size [2022-11-03 01:39:38,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 29 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 109 treesize of output 153 [2022-11-03 01:39:39,078 INFO L356 Elim1Store]: treesize reduction 160, result has 48.9 percent of original size [2022-11-03 01:39:39,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 166 treesize of output 266 [2022-11-03 01:39:40,848 INFO L356 Elim1Store]: treesize reduction 88, result has 28.5 percent of original size [2022-11-03 01:39:40,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 57 [2022-11-03 01:39:41,317 INFO L356 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2022-11-03 01:39:41,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 73 [2022-11-03 01:39:41,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:41,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:41,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:41,732 INFO L356 Elim1Store]: treesize reduction 169, result has 21.4 percent of original size [2022-11-03 01:39:41,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 111 [2022-11-03 01:39:42,405 INFO L356 Elim1Store]: treesize reduction 348, result has 38.8 percent of original size [2022-11-03 01:39:42,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 116 treesize of output 285 [2022-11-03 01:39:43,342 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-03 01:39:43,454 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 16