./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF --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 ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:24:49,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:24:49,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:24:49,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:24:49,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:24:49,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:24:49,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:24:49,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:24:49,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:24:49,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:24:49,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:24:49,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:24:49,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:24:49,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:24:49,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:24:49,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:24:49,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:24:49,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:24:49,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:24:49,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:24:49,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:24:49,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:24:49,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:24:49,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:24:49,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:24:49,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:24:49,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:24:49,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:24:49,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:24:49,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:24:49,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:24:49,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:24:49,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:24:49,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:24:49,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:24:49,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:24:49,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:24:49,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:24:49,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:24:49,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:24:49,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:24:49,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:24:49,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:24:49,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:24:49,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:24:49,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:24:49,992 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:24:49,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:24:49,992 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:24:49,992 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:24:49,993 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:24:49,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:24:49,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:24:49,995 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:24:49,995 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:24:49,995 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:24:49,995 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:24:49,996 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:24:49,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:24:49,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:24:49,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:24:49,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:24:49,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:24:49,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:24:49,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:24:49,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:24:49,998 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:24:49,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:24:49,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:24:49,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:24:49,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:24:50,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:24:50,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:24:50,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:24:50,003 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:24:50,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:24:50,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:24:50,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:24:50,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:24:50,004 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e [2021-11-12 23:24:50,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:24:50,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:24:50,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:24:50,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:24:50,391 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:24:50,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-12 23:24:50,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data/0a01c4e09/a400bb8a8a0249d09157eb7437d0580e/FLAGad76a6a06 [2021-11-12 23:24:51,846 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:24:51,848 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-12 23:24:51,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data/0a01c4e09/a400bb8a8a0249d09157eb7437d0580e/FLAGad76a6a06 [2021-11-12 23:24:52,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data/0a01c4e09/a400bb8a8a0249d09157eb7437d0580e [2021-11-12 23:24:52,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:24:52,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:24:52,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:52,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:24:52,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:24:52,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:52" (1/1) ... [2021-11-12 23:24:52,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cda340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:52, skipping insertion in model container [2021-11-12 23:24:52,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:52" (1/1) ... [2021-11-12 23:24:52,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:24:52,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:24:55,331 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,558 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,588 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,599 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,600 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,617 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,618 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,668 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,680 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,681 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,760 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:55,789 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,090 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,099 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,107 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,223 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,238 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,708 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,711 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,719 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,728 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,729 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,730 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,733 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,735 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:56,743 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,002 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,010 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,020 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,025 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,043 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,078 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,081 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,118 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,120 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,248 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:57,263 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:24:58,168 WARN L228 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-12 23:24:58,171 WARN L228 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-12 23:24:58,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:58,234 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:24:58,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65475fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:58, skipping insertion in model container [2021-11-12 23:24:58,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:58,235 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:24:58,238 INFO L158 Benchmark]: Toolchain (without parser) took 5782.61ms. Allocated memory was 127.9MB in the beginning and 197.1MB in the end (delta: 69.2MB). Free memory was 92.4MB in the beginning and 122.7MB in the end (delta: -30.3MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. [2021-11-12 23:24:58,238 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 127.9MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:24:58,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5779.25ms. Allocated memory was 127.9MB in the beginning and 197.1MB in the end (delta: 69.2MB). Free memory was 92.4MB in the beginning and 122.7MB in the end (delta: -30.3MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. [2021-11-12 23:24:58,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 127.9MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5779.25ms. Allocated memory was 127.9MB in the beginning and 197.1MB in the end (delta: 69.2MB). Free memory was 92.4MB in the beginning and 122.7MB in the end (delta: -30.3MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7443]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF --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 ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:25:01,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:25:01,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:25:01,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:25:01,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:25:01,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:25:01,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:25:01,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:25:01,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:25:01,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:25:01,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:25:01,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:25:01,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:25:01,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:25:01,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:25:01,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:25:01,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:25:01,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:25:01,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:25:01,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:25:01,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:25:01,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:25:01,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:25:01,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:25:01,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:25:01,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:25:01,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:25:01,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:25:01,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:25:01,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:25:01,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:25:01,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:25:01,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:25:01,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:25:01,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:25:01,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:25:01,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:25:01,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:25:01,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:25:01,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:25:01,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:25:01,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:25:01,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:25:01,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:25:01,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:25:01,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:25:01,206 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:25:01,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:25:01,207 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:25:01,207 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:25:01,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:25:01,207 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:25:01,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:25:01,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:25:01,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:25:01,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:25:01,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:25:01,209 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:25:01,210 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:25:01,210 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:25:01,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:25:01,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:25:01,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:25:01,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:25:01,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:25:01,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:25:01,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:01,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:25:01,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:25:01,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:25:01,213 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:25:01,213 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:01,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:25:01,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:25:01,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:25:01,214 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e [2021-11-12 23:25:01,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:25:01,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:25:01,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:25:01,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:25:01,675 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:25:01,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-12 23:25:01,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data/ca056d927/59ee7431779c49bc9b7b8454d0b31f04/FLAG3c5d94aba [2021-11-12 23:25:03,050 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:25:03,051 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-12 23:25:03,165 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data/ca056d927/59ee7431779c49bc9b7b8454d0b31f04/FLAG3c5d94aba [2021-11-12 23:25:03,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/data/ca056d927/59ee7431779c49bc9b7b8454d0b31f04 [2021-11-12 23:25:03,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:25:03,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:25:03,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:25:03,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:25:03,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:25:03,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:25:03" (1/1) ... [2021-11-12 23:25:03,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a96d2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:03, skipping insertion in model container [2021-11-12 23:25:03,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:25:03" (1/1) ... [2021-11-12 23:25:03,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:25:03,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:25:08,638 WARN L228 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-12 23:25:08,642 WARN L228 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-12 23:25:08,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:08,710 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:25:08,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:25:09,297 WARN L228 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-12 23:25:09,298 WARN L228 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-12 23:25:09,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:09,325 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:25:09,944 WARN L228 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-12 23:25:09,945 WARN L228 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_8523cd94-cf82-47ab-b673-c510fe09f2f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-12 23:25:09,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:10,282 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:25:10,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10 WrapperNode [2021-11-12 23:25:10,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:25:10,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:25:10,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:25:10,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:25:10,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:10,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:10,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:25:10,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:25:10,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:25:10,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:25:10,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:10,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:11,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:11,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:11,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:11,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:11,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:11,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:25:11,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:25:11,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:25:11,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:25:11,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (1/1) ... [2021-11-12 23:25:11,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:11,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:25:11,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:25:11,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:25:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_per_engine_handler_adjust [2021-11-12 23:25:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_per_engine_handler_adjust [2021-11-12 23:25:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:25:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:25:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-11-12 23:25:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-11-12 23:25:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_core_destroy [2021-11-12 23:25:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_core_destroy [2021-11-12 23:25:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:25:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:25:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-12 23:25:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-12 23:25:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_watermark_intr_disable [2021-11-12 23:25:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_watermark_intr_disable [2021-11-12 23:25:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:25:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:25:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_completed_recv_next [2021-11-12 23:25:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_completed_recv_next [2021-11-12 23:25:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-12 23:25:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-12 23:25:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_completed_send_next [2021-11-12 23:25:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_completed_send_next [2021-11-12 23:25:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 23:25:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 23:25:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_ce_deinit [2021-11-12 23:25:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_ce_deinit [2021-11-12 23:25:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_start [2021-11-12 23:25:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_start [2021-11-12 23:25:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:25:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:25:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_resume [2021-11-12 23:25:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_resume [2021-11-12 23:25:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:25:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:25:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_read32 [2021-11-12 23:25:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_read32 [2021-11-12 23:25:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-12 23:25:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-12 23:25:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:25:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:25:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ath10k_pci_exit_13_2 [2021-11-12 23:25:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ath10k_pci_exit_13_2 [2021-11-12 23:25:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2021-11-12 23:25:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2021-11-12 23:25:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:25:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-12 23:25:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-12 23:25:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:25:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:25:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_write_mem [2021-11-12 23:25:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_write_mem [2021-11-12 23:25:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:25:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-12 23:25:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-12 23:25:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-12 23:25:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-12 23:25:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_base_address [2021-11-12 23:25:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_base_address [2021-11-12 23:25:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_write_access [2021-11-12 23:25:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_write_access [2021-11-12 23:25:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-12 23:25:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-12 23:25:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:25:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:25:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 23:25:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 23:25:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:25:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:25:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:25:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:25:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_84 [2021-11-12 23:25:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_84 [2021-11-12 23:25:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-12 23:25:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-12 23:25:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:25:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:25:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_86 [2021-11-12 23:25:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_86 [2021-11-12 23:25:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_88 [2021-11-12 23:25:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_88 [2021-11-12 23:25:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:25:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:25:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:25:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:25:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_wake [2021-11-12 23:25:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_wake [2021-11-12 23:25:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:25:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:25:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-12 23:25:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-12 23:25:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_copy_complete_intr_disable [2021-11-12 23:25:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_copy_complete_intr_disable [2021-11-12 23:25:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure get_free_compl [2021-11-12 23:25:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure get_free_compl [2021-11-12 23:25:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_process_ce [2021-11-12 23:25:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_process_ce [2021-11-12 23:25:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_reg_read32 [2021-11-12 23:25:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_reg_read32 [2021-11-12 23:25:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-12 23:25:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-12 23:25:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 23:25:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 23:25:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:25:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:25:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_do_pci_wake [2021-11-12 23:25:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_do_pci_wake [2021-11-12 23:25:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_cleanup_ce [2021-11-12 23:25:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_cleanup_ce [2021-11-12 23:25:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_disable_interrupts [2021-11-12 23:25:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_disable_interrupts [2021-11-12 23:25:11,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:25:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:25:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:25:11,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:25:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:25:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_sleep [2021-11-12 23:25:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_sleep [2021-11-12 23:25:11,457 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-12 23:25:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-12 23:25:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-12 23:25:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-12 23:25:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:25:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:25:11,458 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:25:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:25:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_request_early_irq [2021-11-12 23:25:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_request_early_irq [2021-11-12 23:25:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:25:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-12 23:25:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-12 23:25:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:25:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:25:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:25:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:25:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:25:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_reg_write32 [2021-11-12 23:25:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_reg_write32 [2021-11-12 23:25:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-12 23:25:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-12 23:25:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:25:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:25:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 23:25:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 23:25:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-12 23:25:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-12 23:25:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_get_free_queue_number [2021-11-12 23:25:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_get_free_queue_number [2021-11-12 23:25:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_stop [2021-11-12 23:25:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_stop [2021-11-12 23:25:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_recv_buf_enqueue [2021-11-12 23:25:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_recv_buf_enqueue [2021-11-12 23:25:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_priv [2021-11-12 23:25:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_priv [2021-11-12 23:25:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:25:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:25:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:25:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:25:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:25:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_deinit [2021-11-12 23:25:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_deinit [2021-11-12 23:25:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure __roundup_pow_of_two [2021-11-12 23:25:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __roundup_pow_of_two [2021-11-12 23:25:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:25:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:25:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_rx_pipe_cleanup [2021-11-12 23:25:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_rx_pipe_cleanup [2021-11-12 23:25:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_revoke_recv_next [2021-11-12 23:25:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_revoke_recv_next [2021-11-12 23:25:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_access [2021-11-12 23:25:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_access [2021-11-12 23:25:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-12 23:25:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-12 23:25:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_stop_ce [2021-11-12 23:25:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_stop_ce [2021-11-12 23:25:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_device_reset [2021-11-12 23:25:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_device_reset [2021-11-12 23:25:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:25:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-12 23:25:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-12 23:25:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:25:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:25:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:25:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:25:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:25:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:25:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:25:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_post_rx_pipe [2021-11-12 23:25:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_post_rx_pipe [2021-11-12 23:25:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_free_irq [2021-11-12 23:25:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_free_irq [2021-11-12 23:25:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-12 23:25:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-12 23:25:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2021-11-12 23:25:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2021-11-12 23:25:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_power_down [2021-11-12 23:25:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_power_down [2021-11-12 23:25:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:25:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:25:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_per_engine_service [2021-11-12 23:25:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_per_engine_service [2021-11-12 23:25:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 23:25:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 23:25:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:25:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:25:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_send [2021-11-12 23:25:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_send [2021-11-12 23:25:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_suspend [2021-11-12 23:25:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_suspend [2021-11-12 23:25:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-12 23:25:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-12 23:25:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-12 23:25:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-12 23:25:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-12 23:25:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-12 23:25:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:25:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-12 23:25:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-12 23:25:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_src_ring_read_index_get [2021-11-12 23:25:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_src_ring_read_index_get [2021-11-12 23:25:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure ATH10K_SKB_CB [2021-11-12 23:25:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ATH10K_SKB_CB [2021-11-12 23:25:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_free_early_irq [2021-11-12 23:25:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_free_early_irq [2021-11-12 23:25:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:25:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_do_pci_sleep [2021-11-12 23:25:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_do_pci_sleep [2021-11-12 23:25:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_kill_tasklet [2021-11-12 23:25:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_kill_tasklet [2021-11-12 23:25:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:25:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:25:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:25:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~TO~C_INT [2021-11-12 23:25:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~TO~C_INT [2021-11-12 23:25:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:25:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_remove [2021-11-12 23:25:11,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_remove [2021-11-12 23:25:11,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:25:11,598 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_disable_and_clear_legacy_irq [2021-11-12 23:25:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_disable_and_clear_legacy_irq [2021-11-12 23:25:11,599 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 23:25:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 23:25:11,599 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-12 23:25:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-12 23:25:11,599 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_irq_pending [2021-11-12 23:25:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_irq_pending [2021-11-12 23:25:11,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-12 23:25:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-12 23:25:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:25:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:25:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-12 23:25:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-12 23:25:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 23:25:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 23:25:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-12 23:25:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-12 23:25:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-12 23:25:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-12 23:25:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_87 [2021-11-12 23:25:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_87 [2021-11-12 23:25:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_85 [2021-11-12 23:25:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_85 [2021-11-12 23:25:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_83 [2021-11-12 23:25:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_83 [2021-11-12 23:25:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_write32 [2021-11-12 23:25:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_write32 [2021-11-12 23:25:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_map_service_to_pipe [2021-11-12 23:25:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_map_service_to_pipe [2021-11-12 23:25:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msi_block [2021-11-12 23:25:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msi_block [2021-11-12 23:25:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:25:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:25:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:25:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:25:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:25:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:25:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:25:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_3_6 [2021-11-12 23:25:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_3_6 [2021-11-12 23:25:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:25:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:25:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:25:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:25:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:25:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-12 23:25:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-12 23:25:11,604 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_dbg_dump [2021-11-12 23:25:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_dbg_dump [2021-11-12 23:25:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_6 [2021-11-12 23:25:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_6 [2021-11-12 23:25:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_power_up [2021-11-12 23:25:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_power_up [2021-11-12 23:25:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:25:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:25:11,605 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_deinit_irq [2021-11-12 23:25:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_deinit_irq [2021-11-12 23:25:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_master [2021-11-12 23:25:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_master [2021-11-12 23:25:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-12 23:25:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-12 23:25:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure host_interest_item_address [2021-11-12 23:25:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure host_interest_item_address [2021-11-12 23:25:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_mem [2021-11-12 23:25:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_mem [2021-11-12 23:25:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-12 23:25:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-12 23:25:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-12 23:25:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-12 23:25:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_cancel_send_next [2021-11-12 23:25:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_cancel_send_next [2021-11-12 23:25:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:25:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:25:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_engine_int_status_clear [2021-11-12 23:25:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_engine_int_status_clear [2021-11-12 23:25:13,557 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:26:02,040 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:26:02,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:26:02,590 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-12 23:26:02,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:02 BoogieIcfgContainer [2021-11-12 23:26:02,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:26:02,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:26:02,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:26:02,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:26:02,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:25:03" (1/3) ... [2021-11-12 23:26:02,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70995f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:02, skipping insertion in model container [2021-11-12 23:26:02,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:10" (2/3) ... [2021-11-12 23:26:02,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70995f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:26:02, skipping insertion in model container [2021-11-12 23:26:02,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:26:02" (3/3) ... [2021-11-12 23:26:02,606 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-12 23:26:02,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:26:02,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:26:02,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:26:02,674 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:26:02,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:26:02,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 2564 states, 1685 states have (on average 1.2783382789317508) internal successors, (2154), 1732 states have internal predecessors, (2154), 741 states have call successors, (741), 142 states have call predecessors, (741), 141 states have return successors, (732), 726 states have call predecessors, (732), 732 states have call successors, (732) [2021-11-12 23:26:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-12 23:26:02,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:02,776 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:02,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1573750035, now seen corresponding path program 1 times [2021-11-12 23:26:02,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:02,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187334282] [2021-11-12 23:26:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:02,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:02,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:02,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:02,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:26:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:09,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:26:09,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2021-11-12 23:26:10,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-12 23:26:10,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:10,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187334282] [2021-11-12 23:26:10,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187334282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:10,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:10,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:26:10,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905614019] [2021-11-12 23:26:10,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:10,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:10,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:10,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:10,841 INFO L87 Difference]: Start difference. First operand has 2564 states, 1685 states have (on average 1.2783382789317508) internal successors, (2154), 1732 states have internal predecessors, (2154), 741 states have call successors, (741), 142 states have call predecessors, (741), 141 states have return successors, (732), 726 states have call predecessors, (732), 732 states have call successors, (732) Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-12 23:26:13,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:22,417 INFO L93 Difference]: Finished difference Result 9699 states and 13910 transitions. [2021-11-12 23:26:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:26:22,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 210 [2021-11-12 23:26:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:22,527 INFO L225 Difference]: With dead ends: 9699 [2021-11-12 23:26:22,528 INFO L226 Difference]: Without dead ends: 7062 [2021-11-12 23:26:22,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:22,570 INFO L933 BasicCegarLoop]: 5117 mSDtfsCounter, 6595 mSDsluCounter, 6304 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9889.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6595 SdHoareTripleChecker+Valid, 11421 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.85ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10831.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:22,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6595 Valid, 11421 Invalid, 1529 Unknown, 0 Unchecked, 87.85ms Time], IncrementalHoareTripleChecker [50 Valid, 1478 Invalid, 1 Unknown, 0 Unchecked, 10831.38ms Time] [2021-11-12 23:26:22,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2021-11-12 23:26:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 7056. [2021-11-12 23:26:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7056 states, 4663 states have (on average 1.2721423975981128) internal successors, (5932), 4773 states have internal predecessors, (5932), 1985 states have call successors, (1985), 407 states have call predecessors, (1985), 407 states have return successors, (1985), 1965 states have call predecessors, (1985), 1985 states have call successors, (1985) [2021-11-12 23:26:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 9902 transitions. [2021-11-12 23:26:23,215 INFO L78 Accepts]: Start accepts. Automaton has 7056 states and 9902 transitions. Word has length 210 [2021-11-12 23:26:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:23,217 INFO L470 AbstractCegarLoop]: Abstraction has 7056 states and 9902 transitions. [2021-11-12 23:26:23,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-12 23:26:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7056 states and 9902 transitions. [2021-11-12 23:26:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-12 23:26:23,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:23,247 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:23,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:26:23,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:23,469 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2037188258, now seen corresponding path program 1 times [2021-11-12 23:26:23,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:23,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061794273] [2021-11-12 23:26:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:23,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:23,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:23,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:26:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:30,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:26:30,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2021-11-12 23:26:31,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2021-11-12 23:26:32,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:32,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061794273] [2021-11-12 23:26:32,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061794273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:32,128 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:32,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:26:32,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065492229] [2021-11-12 23:26:32,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:32,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:32,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:32,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:32,133 INFO L87 Difference]: Start difference. First operand 7056 states and 9902 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-11-12 23:26:34,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:43,878 INFO L93 Difference]: Finished difference Result 20189 states and 28172 transitions. [2021-11-12 23:26:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:26:43,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) Word has length 288 [2021-11-12 23:26:43,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:44,011 INFO L225 Difference]: With dead ends: 20189 [2021-11-12 23:26:44,011 INFO L226 Difference]: Without dead ends: 13168 [2021-11-12 23:26:44,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:44,062 INFO L933 BasicCegarLoop]: 6373 mSDtfsCounter, 6245 mSDsluCounter, 5987 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10092.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6245 SdHoareTripleChecker+Valid, 12360 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.66ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10942.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:44,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6245 Valid, 12360 Invalid, 1520 Unknown, 0 Unchecked, 61.66ms Time], IncrementalHoareTripleChecker [51 Valid, 1468 Invalid, 1 Unknown, 0 Unchecked, 10942.45ms Time] [2021-11-12 23:26:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13168 states. [2021-11-12 23:26:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13168 to 13152. [2021-11-12 23:26:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 8767 states have (on average 1.2721569522071403) internal successors, (11153), 8989 states have internal predecessors, (11153), 3554 states have call successors, (3554), 830 states have call predecessors, (3554), 830 states have return successors, (3554), 3506 states have call predecessors, (3554), 3554 states have call successors, (3554) [2021-11-12 23:26:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 18261 transitions. [2021-11-12 23:26:44,888 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 18261 transitions. Word has length 288 [2021-11-12 23:26:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:44,891 INFO L470 AbstractCegarLoop]: Abstraction has 13152 states and 18261 transitions. [2021-11-12 23:26:44,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-11-12 23:26:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 18261 transitions. [2021-11-12 23:26:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-12 23:26:44,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:44,917 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:44,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:45,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:45,131 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1202307122, now seen corresponding path program 1 times [2021-11-12 23:26:45,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:45,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087804124] [2021-11-12 23:26:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:45,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:45,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:45,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:45,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:26:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:51,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2390 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:26:51,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:26:52,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:26:53,652 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:53,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087804124] [2021-11-12 23:26:53,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087804124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:53,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1816478938] [2021-11-12 23:26:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:53,653 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:53,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:26:53,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:26:53,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 23:26:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:56,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2390 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:26:56,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:26:58,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:26:59,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1816478938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:59,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:26:59,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:26:59,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059277344] [2021-11-12 23:26:59,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:59,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:26:59,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:26:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:26:59,794 INFO L87 Difference]: Start difference. First operand 13152 states and 18261 transitions. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:27:02,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:10,188 INFO L93 Difference]: Finished difference Result 26269 states and 36592 transitions. [2021-11-12 23:27:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:27:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 296 [2021-11-12 23:27:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:10,443 INFO L225 Difference]: With dead ends: 26269 [2021-11-12 23:27:10,443 INFO L226 Difference]: Without dead ends: 13152 [2021-11-12 23:27:10,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:27:10,516 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 5395 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 1385 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8844.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5395 SdHoareTripleChecker+Valid, 5615 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.61ms SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9783.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:10,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5395 Valid, 5615 Invalid, 2798 Unknown, 0 Unchecked, 32.61ms Time], IncrementalHoareTripleChecker [1385 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 9783.70ms Time] [2021-11-12 23:27:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13152 states. [2021-11-12 23:27:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13152 to 13152. [2021-11-12 23:27:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 8767 states have (on average 1.2712444393749287) internal successors, (11145), 8989 states have internal predecessors, (11145), 3554 states have call successors, (3554), 830 states have call predecessors, (3554), 830 states have return successors, (3554), 3506 states have call predecessors, (3554), 3554 states have call successors, (3554) [2021-11-12 23:27:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 18253 transitions. [2021-11-12 23:27:11,457 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 18253 transitions. Word has length 296 [2021-11-12 23:27:11,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:11,458 INFO L470 AbstractCegarLoop]: Abstraction has 13152 states and 18253 transitions. [2021-11-12 23:27:11,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:27:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 18253 transitions. [2021-11-12 23:27:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-12 23:27:11,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:11,484 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:27:11,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:11,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:11,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:11,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash -511265466, now seen corresponding path program 1 times [2021-11-12 23:27:11,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:11,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551751725] [2021-11-12 23:27:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:11,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:11,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:11,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:11,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:27:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:18,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:27:18,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:27:19,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:27:19,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:19,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551751725] [2021-11-12 23:27:19,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551751725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:19,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1983238866] [2021-11-12 23:27:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:19,951 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:19,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:27:19,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:27:19,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:27:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:22,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:27:22,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:27:24,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:27:25,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1983238866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:25,849 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:27:25,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:27:25,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767843396] [2021-11-12 23:27:25,850 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:25,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:27:25,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:25,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:27:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:27:25,852 INFO L87 Difference]: Start difference. First operand 13152 states and 18253 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:27:28,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:35,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:35,490 INFO L93 Difference]: Finished difference Result 26269 states and 36576 transitions. [2021-11-12 23:27:35,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:27:35,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 297 [2021-11-12 23:27:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:35,565 INFO L225 Difference]: With dead ends: 26269 [2021-11-12 23:27:35,565 INFO L226 Difference]: Without dead ends: 13152 [2021-11-12 23:27:35,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1174 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:27:35,619 INFO L933 BasicCegarLoop]: 3512 mSDtfsCounter, 3381 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8291.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.72ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9027.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:35,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3381 Valid, 5613 Invalid, 1441 Unknown, 0 Unchecked, 23.72ms Time], IncrementalHoareTripleChecker [28 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 9027.05ms Time] [2021-11-12 23:27:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13152 states. [2021-11-12 23:27:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13152 to 13152. [2021-11-12 23:27:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 8767 states have (on average 1.270331926542717) internal successors, (11137), 8989 states have internal predecessors, (11137), 3554 states have call successors, (3554), 830 states have call predecessors, (3554), 830 states have return successors, (3554), 3506 states have call predecessors, (3554), 3554 states have call successors, (3554) [2021-11-12 23:27:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 18245 transitions. [2021-11-12 23:27:36,401 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 18245 transitions. Word has length 297 [2021-11-12 23:27:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:36,403 INFO L470 AbstractCegarLoop]: Abstraction has 13152 states and 18245 transitions. [2021-11-12 23:27:36,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:27:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 18245 transitions. [2021-11-12 23:27:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-12 23:27:36,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:36,428 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:27:36,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:36,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 23:27:36,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:36,844 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1977891538, now seen corresponding path program 1 times [2021-11-12 23:27:36,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:36,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114759157] [2021-11-12 23:27:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:36,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:36,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:36,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:36,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:27:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:42,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:27:42,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:27:43,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:27:44,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:44,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114759157] [2021-11-12 23:27:44,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114759157] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:44,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433585810] [2021-11-12 23:27:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:44,748 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:27:44,776 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:27:44,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:27:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:47,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:27:47,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:27:49,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:27:50,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [433585810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:50,615 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:27:50,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:27:50,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331541237] [2021-11-12 23:27:50,616 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:50,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:27:50,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:27:50,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:27:50,618 INFO L87 Difference]: Start difference. First operand 13152 states and 18245 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:27:52,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:28:00,509 INFO L93 Difference]: Finished difference Result 26269 states and 36560 transitions. [2021-11-12 23:28:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:28:00,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 298 [2021-11-12 23:28:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:28:00,577 INFO L225 Difference]: With dead ends: 26269 [2021-11-12 23:28:00,577 INFO L226 Difference]: Without dead ends: 13152 [2021-11-12 23:28:00,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1178 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:28:00,626 INFO L933 BasicCegarLoop]: 3511 mSDtfsCounter, 3380 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8310.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3380 SdHoareTripleChecker+Valid, 5611 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.17ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9107.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:28:00,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3380 Valid, 5611 Invalid, 1441 Unknown, 0 Unchecked, 22.17ms Time], IncrementalHoareTripleChecker [28 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 9107.00ms Time] [2021-11-12 23:28:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13152 states. [2021-11-12 23:28:01,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13152 to 13152. [2021-11-12 23:28:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 8767 states have (on average 1.2694194137105053) internal successors, (11129), 8989 states have internal predecessors, (11129), 3554 states have call successors, (3554), 830 states have call predecessors, (3554), 830 states have return successors, (3554), 3506 states have call predecessors, (3554), 3554 states have call successors, (3554) [2021-11-12 23:28:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 18237 transitions. [2021-11-12 23:28:01,433 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 18237 transitions. Word has length 298 [2021-11-12 23:28:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:28:01,434 INFO L470 AbstractCegarLoop]: Abstraction has 13152 states and 18237 transitions. [2021-11-12 23:28:01,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:28:01,435 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 18237 transitions. [2021-11-12 23:28:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-12 23:28:01,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:28:01,458 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:28:01,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:01,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:01,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:28:01,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:28:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:28:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash -84142910, now seen corresponding path program 1 times [2021-11-12 23:28:01,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:28:01,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473157798] [2021-11-12 23:28:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:28:01,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:28:01,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:28:01,878 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:28:01,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:28:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:28:07,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2393 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:28:07,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:28:08,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:28:09,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:28:09,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473157798] [2021-11-12 23:28:09,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473157798] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:28:09,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [794927148] [2021-11-12 23:28:09,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:28:09,815 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:28:09,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:28:09,816 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:28:09,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:28:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:28:12,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 2393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:28:12,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:28:14,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:28:15,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [794927148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:28:15,874 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:28:15,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:28:15,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230202842] [2021-11-12 23:28:15,874 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:28:15,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:28:15,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:28:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:28:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:28:15,877 INFO L87 Difference]: Start difference. First operand 13152 states and 18237 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:28:18,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:26,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:28:26,333 INFO L93 Difference]: Finished difference Result 26925 states and 37268 transitions. [2021-11-12 23:28:26,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:28:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 299 [2021-11-12 23:28:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:28:26,417 INFO L225 Difference]: With dead ends: 26925 [2021-11-12 23:28:26,417 INFO L226 Difference]: Without dead ends: 13808 [2021-11-12 23:28:26,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1182 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:28:26,472 INFO L933 BasicCegarLoop]: 3634 mSDtfsCounter, 3501 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8894.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.99ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9701.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:28:26,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 5972 Invalid, 1610 Unknown, 0 Unchecked, 27.99ms Time], IncrementalHoareTripleChecker [30 Valid, 1579 Invalid, 1 Unknown, 0 Unchecked, 9701.50ms Time] [2021-11-12 23:28:26,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13808 states. [2021-11-12 23:28:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13808 to 13808. [2021-11-12 23:28:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13808 states, 9183 states have (on average 1.2613524991832734) internal successors, (11583), 9422 states have internal predecessors, (11583), 3685 states have call successors, (3685), 939 states have call predecessors, (3685), 939 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:28:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13808 states to 13808 states and 18953 transitions. [2021-11-12 23:28:27,580 INFO L78 Accepts]: Start accepts. Automaton has 13808 states and 18953 transitions. Word has length 299 [2021-11-12 23:28:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:28:27,581 INFO L470 AbstractCegarLoop]: Abstraction has 13808 states and 18953 transitions. [2021-11-12 23:28:27,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:28:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 13808 states and 18953 transitions. [2021-11-12 23:28:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-12 23:28:27,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:28:27,607 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:28:27,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:27,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:28,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:28:28,023 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:28:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:28:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1392960982, now seen corresponding path program 1 times [2021-11-12 23:28:28,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:28:28,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390176755] [2021-11-12 23:28:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:28:28,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:28:28,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:28:28,032 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:28:28,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:28:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:28:34,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:28:34,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:28:35,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:28:35,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:28:35,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390176755] [2021-11-12 23:28:35,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390176755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:28:35,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1507689227] [2021-11-12 23:28:35,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:28:35,843 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:28:35,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:28:35,844 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:28:35,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:28:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:28:38,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:28:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:28:40,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:28:41,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1507689227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:28:41,696 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:28:41,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:28:41,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842381799] [2021-11-12 23:28:41,697 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:28:41,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:28:41,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:28:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:28:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:28:41,699 INFO L87 Difference]: Start difference. First operand 13808 states and 18953 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:28:43,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:28:51,489 INFO L93 Difference]: Finished difference Result 27756 states and 38111 transitions. [2021-11-12 23:28:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:28:51,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 300 [2021-11-12 23:28:51,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:28:51,565 INFO L225 Difference]: With dead ends: 27756 [2021-11-12 23:28:51,565 INFO L226 Difference]: Without dead ends: 13983 [2021-11-12 23:28:51,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:28:51,616 INFO L933 BasicCegarLoop]: 3536 mSDtfsCounter, 5383 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 1348 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8262.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5383 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.54ms SdHoareTripleChecker+Time, 1348 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9051.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:28:51,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5383 Valid, 5659 Invalid, 2763 Unknown, 0 Unchecked, 30.54ms Time], IncrementalHoareTripleChecker [1348 Valid, 1414 Invalid, 1 Unknown, 0 Unchecked, 9051.93ms Time] [2021-11-12 23:28:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-12 23:28:52,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-12 23:28:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2573821539783099) internal successors, (11710), 9552 states have internal predecessors, (11710), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:28:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19080 transitions. [2021-11-12 23:28:52,651 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19080 transitions. Word has length 300 [2021-11-12 23:28:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:28:52,652 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19080 transitions. [2021-11-12 23:28:52,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:28:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19080 transitions. [2021-11-12 23:28:52,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-12 23:28:52,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:28:52,675 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:28:52,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:52,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:53,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:28:53,100 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:28:53,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:28:53,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1097868350, now seen corresponding path program 1 times [2021-11-12 23:28:53,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:28:53,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269592136] [2021-11-12 23:28:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:28:53,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:28:53,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:28:53,107 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:28:53,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:28:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:28:59,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 2395 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:28:59,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:29:00,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:29:00,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:29:00,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269592136] [2021-11-12 23:29:00,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269592136] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:29:00,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [214971247] [2021-11-12 23:29:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:00,908 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:29:00,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:29:00,914 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:29:00,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:29:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:03,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 2395 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:29:03,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:29:05,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:29:06,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [214971247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:06,790 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:29:06,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:29:06,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878263796] [2021-11-12 23:29:06,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:06,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:29:06,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:29:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:29:06,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:29:06,792 INFO L87 Difference]: Start difference. First operand 13983 states and 19080 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:29:09,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:17,179 INFO L93 Difference]: Finished difference Result 27931 states and 38230 transitions. [2021-11-12 23:29:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:29:17,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 301 [2021-11-12 23:29:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:17,246 INFO L225 Difference]: With dead ends: 27931 [2021-11-12 23:29:17,246 INFO L226 Difference]: Without dead ends: 13983 [2021-11-12 23:29:17,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:29:17,290 INFO L933 BasicCegarLoop]: 3508 mSDtfsCounter, 5380 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 1385 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8605.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5380 SdHoareTripleChecker+Valid, 5605 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.88ms SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9441.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:17,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5380 Valid, 5605 Invalid, 2798 Unknown, 0 Unchecked, 28.88ms Time], IncrementalHoareTripleChecker [1385 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 9441.19ms Time] [2021-11-12 23:29:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-12 23:29:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-12 23:29:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2565231396971974) internal successors, (11702), 9552 states have internal predecessors, (11702), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:29:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19072 transitions. [2021-11-12 23:29:18,076 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19072 transitions. Word has length 301 [2021-11-12 23:29:18,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:18,077 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19072 transitions. [2021-11-12 23:29:18,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:29:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19072 transitions. [2021-11-12 23:29:18,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-12 23:29:18,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:18,098 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:18,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:18,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:18,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:29:18,511 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:29:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:18,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1118682918, now seen corresponding path program 1 times [2021-11-12 23:29:18,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:29:18,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687963864] [2021-11-12 23:29:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:18,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:29:18,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:29:18,517 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:29:18,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:29:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:24,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2396 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:29:24,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:29:25,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:29:26,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:29:26,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687963864] [2021-11-12 23:29:26,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687963864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:29:26,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1790735835] [2021-11-12 23:29:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:26,435 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:29:26,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:29:26,436 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:29:26,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:29:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:28,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:29:28,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:29:31,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:29:32,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1790735835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:32,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:29:32,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:29:32,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539703033] [2021-11-12 23:29:32,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:32,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:29:32,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:29:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:29:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:29:32,502 INFO L87 Difference]: Start difference. First operand 13983 states and 19072 transitions. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:29:34,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:42,605 INFO L93 Difference]: Finished difference Result 27931 states and 38214 transitions. [2021-11-12 23:29:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:29:42,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 302 [2021-11-12 23:29:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:42,679 INFO L225 Difference]: With dead ends: 27931 [2021-11-12 23:29:42,679 INFO L226 Difference]: Without dead ends: 13983 [2021-11-12 23:29:42,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:29:42,724 INFO L933 BasicCegarLoop]: 3507 mSDtfsCounter, 3376 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8363.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3376 SdHoareTripleChecker+Valid, 5603 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.00ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9124.85ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:42,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3376 Valid, 5603 Invalid, 1441 Unknown, 0 Unchecked, 23.00ms Time], IncrementalHoareTripleChecker [28 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 9124.85ms Time] [2021-11-12 23:29:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-12 23:29:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-12 23:29:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.255664125416085) internal successors, (11694), 9552 states have internal predecessors, (11694), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:29:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19064 transitions. [2021-11-12 23:29:43,743 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19064 transitions. Word has length 302 [2021-11-12 23:29:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:43,743 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19064 transitions. [2021-11-12 23:29:43,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:29:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19064 transitions. [2021-11-12 23:29:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-11-12 23:29:43,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:43,762 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:43,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:44,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:44,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:29:44,181 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:29:44,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1878451130, now seen corresponding path program 1 times [2021-11-12 23:29:44,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:29:44,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035036504] [2021-11-12 23:29:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:44,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:29:44,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:29:44,187 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:29:44,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:29:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:50,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:29:50,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:29:51,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:29:52,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:29:52,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035036504] [2021-11-12 23:29:52,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035036504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:29:52,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1630636441] [2021-11-12 23:29:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:52,179 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:29:52,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:29:52,180 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:29:52,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:29:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:54,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:29:54,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:29:56,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:29:58,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1630636441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:58,057 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:29:58,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:29:58,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010572380] [2021-11-12 23:29:58,058 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:58,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:29:58,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:29:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:29:58,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:29:58,060 INFO L87 Difference]: Start difference. First operand 13983 states and 19064 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:30:00,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:30:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:30:08,055 INFO L93 Difference]: Finished difference Result 27931 states and 38198 transitions. [2021-11-12 23:30:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:30:08,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 303 [2021-11-12 23:30:08,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:30:08,140 INFO L225 Difference]: With dead ends: 27931 [2021-11-12 23:30:08,140 INFO L226 Difference]: Without dead ends: 13983 [2021-11-12 23:30:08,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:30:08,196 INFO L933 BasicCegarLoop]: 3506 mSDtfsCounter, 3375 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8310.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3375 SdHoareTripleChecker+Valid, 5601 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.91ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9079.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:30:08,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3375 Valid, 5601 Invalid, 1441 Unknown, 0 Unchecked, 23.91ms Time], IncrementalHoareTripleChecker [28 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 9079.49ms Time] [2021-11-12 23:30:08,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-12 23:30:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-12 23:30:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2548051111349727) internal successors, (11686), 9552 states have internal predecessors, (11686), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:30:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19056 transitions. [2021-11-12 23:30:09,236 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19056 transitions. Word has length 303 [2021-11-12 23:30:09,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:30:09,237 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19056 transitions. [2021-11-12 23:30:09,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:30:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19056 transitions. [2021-11-12 23:30:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-12 23:30:09,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:30:09,253 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:30:09,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:09,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:09,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:30:09,656 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:30:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:30:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash -224021470, now seen corresponding path program 1 times [2021-11-12 23:30:09,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:30:09,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109771267] [2021-11-12 23:30:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:09,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:30:09,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:30:09,661 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:30:09,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:30:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:15,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:30:15,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:30:16,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:30:17,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:30:17,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109771267] [2021-11-12 23:30:17,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109771267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:17,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [284650621] [2021-11-12 23:30:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:17,788 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:30:17,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:30:17,789 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:30:17,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:30:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:20,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:30:20,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:30:22,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:30:23,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [284650621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:30:23,977 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:30:23,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:30:23,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135812489] [2021-11-12 23:30:23,978 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:30:23,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:30:23,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:30:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:30:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:30:23,980 INFO L87 Difference]: Start difference. First operand 13983 states and 19056 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:30:26,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:30:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:30:34,148 INFO L93 Difference]: Finished difference Result 27931 states and 38182 transitions. [2021-11-12 23:30:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:30:34,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 304 [2021-11-12 23:30:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:30:34,236 INFO L225 Difference]: With dead ends: 27931 [2021-11-12 23:30:34,237 INFO L226 Difference]: Without dead ends: 13983 [2021-11-12 23:30:34,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1202 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:30:34,296 INFO L933 BasicCegarLoop]: 3505 mSDtfsCounter, 3374 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8305.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.94ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9087.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:30:34,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3374 Valid, 5599 Invalid, 1441 Unknown, 0 Unchecked, 22.94ms Time], IncrementalHoareTripleChecker [28 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 9087.37ms Time] [2021-11-12 23:30:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-12 23:30:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-12 23:30:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2539460968538603) internal successors, (11678), 9552 states have internal predecessors, (11678), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:30:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19048 transitions. [2021-11-12 23:30:35,441 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19048 transitions. Word has length 304 [2021-11-12 23:30:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:30:35,442 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19048 transitions. [2021-11-12 23:30:35,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:30:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19048 transitions. [2021-11-12 23:30:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-12 23:30:35,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:30:35,454 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:30:35,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:35,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:35,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:30:35,855 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:30:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:30:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -861646026, now seen corresponding path program 1 times [2021-11-12 23:30:35,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:30:35,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947779124] [2021-11-12 23:30:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:35,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:30:35,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:30:35,861 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:30:35,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:30:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:41,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 2399 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:30:41,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:30:42,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:30:43,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:30:43,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947779124] [2021-11-12 23:30:43,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947779124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:43,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1447444608] [2021-11-12 23:30:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:43,722 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:30:43,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:30:43,723 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:30:43,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:30:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:46,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 2399 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:30:46,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:30:48,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:30:49,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1447444608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:30:49,891 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:30:49,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:30:49,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923800816] [2021-11-12 23:30:49,892 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:30:49,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:30:49,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:30:49,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:30:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:30:49,893 INFO L87 Difference]: Start difference. First operand 13983 states and 19048 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:30:52,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:00,094 INFO L93 Difference]: Finished difference Result 27931 states and 38166 transitions. [2021-11-12 23:31:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:31:00,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 305 [2021-11-12 23:31:00,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:00,163 INFO L225 Difference]: With dead ends: 27931 [2021-11-12 23:31:00,164 INFO L226 Difference]: Without dead ends: 13983 [2021-11-12 23:31:00,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1206 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:31:00,212 INFO L933 BasicCegarLoop]: 3504 mSDtfsCounter, 3373 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8297.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3373 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.59ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9060.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:00,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3373 Valid, 5597 Invalid, 1441 Unknown, 0 Unchecked, 23.59ms Time], IncrementalHoareTripleChecker [28 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 9060.67ms Time] [2021-11-12 23:31:00,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-12 23:31:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-12 23:31:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2530870825727478) internal successors, (11670), 9552 states have internal predecessors, (11670), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:31:01,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19040 transitions. [2021-11-12 23:31:01,329 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19040 transitions. Word has length 305 [2021-11-12 23:31:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:01,330 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19040 transitions. [2021-11-12 23:31:01,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:31:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19040 transitions. [2021-11-12 23:31:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-12 23:31:01,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:01,341 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:01,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-12 23:31:01,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:31:01,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:31:01,742 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:31:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:01,742 INFO L85 PathProgramCache]: Analyzing trace with hash 961345822, now seen corresponding path program 1 times [2021-11-12 23:31:01,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:31:01,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337674073] [2021-11-12 23:31:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:01,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:31:01,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:31:01,747 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:31:01,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 23:31:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:07,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:31:07,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:31:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:31:08,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:31:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:31:09,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:31:09,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337674073] [2021-11-12 23:31:09,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337674073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:31:09,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1088725047] [2021-11-12 23:31:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:09,633 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:31:09,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:31:09,634 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:31:09,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-12 23:31:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:12,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:31:12,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:31:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:31:14,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:31:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:31:15,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1088725047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:15,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:31:15,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:31:15,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838167171] [2021-11-12 23:31:15,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:15,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:31:15,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:31:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:31:15,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:31:15,614 INFO L87 Difference]: Start difference. First operand 13983 states and 19040 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:31:17,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:25,709 INFO L93 Difference]: Finished difference Result 28001 states and 38200 transitions. [2021-11-12 23:31:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:31:25,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 306 [2021-11-12 23:31:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:25,770 INFO L225 Difference]: With dead ends: 28001 [2021-11-12 23:31:25,771 INFO L226 Difference]: Without dead ends: 14053 [2021-11-12 23:31:25,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:31:25,823 INFO L933 BasicCegarLoop]: 3520 mSDtfsCounter, 3387 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8212.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.43ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8963.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:25,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3387 Valid, 5656 Invalid, 1468 Unknown, 0 Unchecked, 21.43ms Time], IncrementalHoareTripleChecker [30 Valid, 1437 Invalid, 1 Unknown, 0 Unchecked, 8963.50ms Time] [2021-11-12 23:31:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-12 23:31:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 14053. [2021-11-12 23:31:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14053 states, 9363 states have (on average 1.2508811278436398) internal successors, (11712), 9602 states have internal predecessors, (11712), 3685 states have call successors, (3685), 1004 states have call predecessors, (3685), 1004 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:31:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14053 states to 14053 states and 19082 transitions. [2021-11-12 23:31:26,894 INFO L78 Accepts]: Start accepts. Automaton has 14053 states and 19082 transitions. Word has length 306 [2021-11-12 23:31:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:26,894 INFO L470 AbstractCegarLoop]: Abstraction has 14053 states and 19082 transitions. [2021-11-12 23:31:26,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:31:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 14053 states and 19082 transitions. [2021-11-12 23:31:26,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-12 23:31:26,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:26,903 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:26,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-12 23:31:27,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:31:27,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:31:27,308 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:31:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1754034866, now seen corresponding path program 1 times [2021-11-12 23:31:27,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:31:27,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350322496] [2021-11-12 23:31:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:27,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:31:27,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:31:27,314 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:31:27,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:31:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:33,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:31:33,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:31:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:31:34,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:31:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:31:35,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:31:35,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350322496] [2021-11-12 23:31:35,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350322496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:31:35,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1072298421] [2021-11-12 23:31:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:35,090 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:31:35,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:31:35,091 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:31:35,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-12 23:31:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:37,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:31:37,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:31:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:31:39,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:31:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:31:40,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1072298421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:40,860 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:31:40,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:31:40,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050761062] [2021-11-12 23:31:40,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:40,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:31:40,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:31:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:31:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:31:40,862 INFO L87 Difference]: Start difference. First operand 14053 states and 19082 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:31:43,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:50,757 INFO L93 Difference]: Finished difference Result 28071 states and 38234 transitions. [2021-11-12 23:31:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:31:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 307 [2021-11-12 23:31:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:50,803 INFO L225 Difference]: With dead ends: 28071 [2021-11-12 23:31:50,803 INFO L226 Difference]: Without dead ends: 14053 [2021-11-12 23:31:50,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1214 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:31:50,844 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 5362 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 1385 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8040.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5362 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.38ms SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8799.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:50,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5362 Valid, 5593 Invalid, 2798 Unknown, 0 Unchecked, 23.38ms Time], IncrementalHoareTripleChecker [1385 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 8799.06ms Time] [2021-11-12 23:31:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-12 23:31:51,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 14053. [2021-11-12 23:31:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14053 states, 9363 states have (on average 1.2500267008437467) internal successors, (11704), 9602 states have internal predecessors, (11704), 3685 states have call successors, (3685), 1004 states have call predecessors, (3685), 1004 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:31:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14053 states to 14053 states and 19074 transitions. [2021-11-12 23:31:51,923 INFO L78 Accepts]: Start accepts. Automaton has 14053 states and 19074 transitions. Word has length 307 [2021-11-12 23:31:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:51,924 INFO L470 AbstractCegarLoop]: Abstraction has 14053 states and 19074 transitions. [2021-11-12 23:31:51,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:31:51,924 INFO L276 IsEmpty]: Start isEmpty. Operand 14053 states and 19074 transitions. [2021-11-12 23:31:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-12 23:31:51,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:51,939 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:51,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-12 23:31:52,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2021-11-12 23:31:52,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:31:52,364 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:31:52,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash 672108058, now seen corresponding path program 1 times [2021-11-12 23:31:52,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:31:52,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027730397] [2021-11-12 23:31:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:52,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:31:52,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:31:52,369 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:31:52,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 23:31:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:58,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2402 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:31:58,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:31:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:31:59,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:32:00,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:00,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027730397] [2021-11-12 23:32:00,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027730397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:32:00,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1533533933] [2021-11-12 23:32:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:00,004 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:32:00,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:32:00,005 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:32:00,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-12 23:32:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:02,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2402 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:32:02,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:32:04,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:32:05,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1533533933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:05,929 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:32:05,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:32:05,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741221153] [2021-11-12 23:32:05,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:05,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:32:05,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:32:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:32:05,932 INFO L87 Difference]: Start difference. First operand 14053 states and 19074 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:32:08,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:32:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:15,651 INFO L93 Difference]: Finished difference Result 28071 states and 38218 transitions. [2021-11-12 23:32:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:32:15,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 308 [2021-11-12 23:32:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:15,696 INFO L225 Difference]: With dead ends: 28071 [2021-11-12 23:32:15,697 INFO L226 Difference]: Without dead ends: 14053 [2021-11-12 23:32:15,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1218 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:32:15,734 INFO L933 BasicCegarLoop]: 3501 mSDtfsCounter, 3370 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7858.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 5591 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.28ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8557.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:15,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3370 Valid, 5591 Invalid, 1441 Unknown, 0 Unchecked, 20.28ms Time], IncrementalHoareTripleChecker [28 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 8557.74ms Time] [2021-11-12 23:32:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-12 23:32:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 14053. [2021-11-12 23:32:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14053 states, 9363 states have (on average 1.2491722738438535) internal successors, (11696), 9602 states have internal predecessors, (11696), 3685 states have call successors, (3685), 1004 states have call predecessors, (3685), 1004 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:32:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14053 states to 14053 states and 19066 transitions. [2021-11-12 23:32:16,779 INFO L78 Accepts]: Start accepts. Automaton has 14053 states and 19066 transitions. Word has length 308 [2021-11-12 23:32:16,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:16,779 INFO L470 AbstractCegarLoop]: Abstraction has 14053 states and 19066 transitions. [2021-11-12 23:32:16,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:32:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 14053 states and 19066 transitions. [2021-11-12 23:32:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-12 23:32:16,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:16,789 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:16,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:17,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:17,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:17,190 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:17,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:17,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1606631982, now seen corresponding path program 1 times [2021-11-12 23:32:17,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:17,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913382933] [2021-11-12 23:32:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:17,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:17,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:17,194 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:17,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-12 23:32:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:23,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:32:23,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:32:23,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:32:24,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:24,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913382933] [2021-11-12 23:32:24,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913382933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:32:24,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [506928374] [2021-11-12 23:32:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:24,806 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:32:24,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:32:24,806 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:32:24,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-12 23:32:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:27,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:32:27,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:32:29,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-12 23:32:30,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [506928374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:30,663 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:32:30,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-12 23:32:30,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687557682] [2021-11-12 23:32:30,663 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:30,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:32:30,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:32:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:32:30,664 INFO L87 Difference]: Start difference. First operand 14053 states and 19066 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:32:32,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:32:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:40,969 INFO L93 Difference]: Finished difference Result 28071 states and 38202 transitions. [2021-11-12 23:32:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:32:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 309 [2021-11-12 23:32:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:41,018 INFO L225 Difference]: With dead ends: 28071 [2021-11-12 23:32:41,018 INFO L226 Difference]: Without dead ends: 14053 [2021-11-12 23:32:41,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1222 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:32:41,054 INFO L933 BasicCegarLoop]: 3500 mSDtfsCounter, 3369 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8219.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 5589 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.60ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8979.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:41,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3369 Valid, 5589 Invalid, 1441 Unknown, 0 Unchecked, 20.60ms Time], IncrementalHoareTripleChecker [28 Valid, 1412 Invalid, 1 Unknown, 0 Unchecked, 8979.87ms Time] [2021-11-12 23:32:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-12 23:32:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 14053. [2021-11-12 23:32:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14053 states, 9363 states have (on average 1.2483178468439602) internal successors, (11688), 9602 states have internal predecessors, (11688), 3685 states have call successors, (3685), 1004 states have call predecessors, (3685), 1004 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-12 23:32:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14053 states to 14053 states and 19058 transitions. [2021-11-12 23:32:42,146 INFO L78 Accepts]: Start accepts. Automaton has 14053 states and 19058 transitions. Word has length 309 [2021-11-12 23:32:42,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:42,146 INFO L470 AbstractCegarLoop]: Abstraction has 14053 states and 19058 transitions. [2021-11-12 23:32:42,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-12 23:32:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 14053 states and 19058 transitions. [2021-11-12 23:32:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-12 23:32:42,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:42,161 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:42,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:42,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:42,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:32:42,584 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:42,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1635261133, now seen corresponding path program 1 times [2021-11-12 23:32:42,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:42,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181264294] [2021-11-12 23:32:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:42,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:42,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:42,589 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:42,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-12 23:32:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:48,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:32:48,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-12 23:32:49,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-12 23:32:50,441 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:50,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181264294] [2021-11-12 23:32:50,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181264294] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:32:50,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [52267149] [2021-11-12 23:32:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:50,442 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:32:50,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:32:50,450 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:32:50,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-12 23:32:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:53,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:32:53,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2021-11-12 23:32:53,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2021-11-12 23:32:54,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [52267149] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:54,721 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:32:54,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 11 [2021-11-12 23:32:54,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744268197] [2021-11-12 23:32:54,722 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:54,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:32:54,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:32:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:32:54,723 INFO L87 Difference]: Start difference. First operand 14053 states and 19058 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-12 23:32:56,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:33:07,744 INFO L93 Difference]: Finished difference Result 37918 states and 51420 transitions. [2021-11-12 23:33:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:33:07,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 309 [2021-11-12 23:33:07,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:33:07,815 INFO L225 Difference]: With dead ends: 37918 [2021-11-12 23:33:07,815 INFO L226 Difference]: Without dead ends: 23900 [2021-11-12 23:33:07,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1223 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:33:07,848 INFO L933 BasicCegarLoop]: 7266 mSDtfsCounter, 6594 mSDsluCounter, 5193 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 675 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9776.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6594 SdHoareTripleChecker+Valid, 12459 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.03ms SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10834.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:33:07,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6594 Valid, 12459 Invalid, 2174 Unknown, 0 Unchecked, 38.03ms Time], IncrementalHoareTripleChecker [675 Valid, 1498 Invalid, 1 Unknown, 0 Unchecked, 10834.81ms Time] [2021-11-12 23:33:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23900 states. [2021-11-12 23:33:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23900 to 23890. [2021-11-12 23:33:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23890 states, 15929 states have (on average 1.2472848264172265) internal successors, (19868), 16327 states have internal predecessors, (19868), 6244 states have call successors, (6244), 1716 states have call predecessors, (6244), 1716 states have return successors, (6244), 6157 states have call predecessors, (6244), 6244 states have call successors, (6244) [2021-11-12 23:33:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23890 states to 23890 states and 32356 transitions. [2021-11-12 23:33:09,767 INFO L78 Accepts]: Start accepts. Automaton has 23890 states and 32356 transitions. Word has length 309 [2021-11-12 23:33:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:33:09,768 INFO L470 AbstractCegarLoop]: Abstraction has 23890 states and 32356 transitions. [2021-11-12 23:33:09,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-12 23:33:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 23890 states and 32356 transitions. [2021-11-12 23:33:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-12 23:33:09,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:09,785 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 15, 15, 15, 15, 15, 15, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:33:09,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-12 23:33:10,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-12 23:33:10,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:33:10,199 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:33:10,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash 886744501, now seen corresponding path program 1 times [2021-11-12 23:33:10,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:33:10,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199710939] [2021-11-12 23:33:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:10,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:33:10,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:33:10,205 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:33:10,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-12 23:33:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:16,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:33:16,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-12 23:33:17,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2021-11-12 23:33:18,919 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:33:18,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199710939] [2021-11-12 23:33:18,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199710939] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:33:18,919 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:33:18,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:33:18,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763504208] [2021-11-12 23:33:18,919 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:33:18,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:33:18,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:33:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:33:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:33:18,925 INFO L87 Difference]: Start difference. First operand 23890 states and 32356 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-12 23:33:21,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:33:32,338 INFO L93 Difference]: Finished difference Result 71332 states and 96435 transitions. [2021-11-12 23:33:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:33:32,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 367 [2021-11-12 23:33:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:33:32,511 INFO L225 Difference]: With dead ends: 71332 [2021-11-12 23:33:32,511 INFO L226 Difference]: Without dead ends: 47477 [2021-11-12 23:33:32,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:33:32,579 INFO L933 BasicCegarLoop]: 4234 mSDtfsCounter, 3724 mSDsluCounter, 6220 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8523.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3724 SdHoareTripleChecker+Valid, 10454 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.61ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9299.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:33:32,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3724 Valid, 10454 Invalid, 1408 Unknown, 0 Unchecked, 30.61ms Time], IncrementalHoareTripleChecker [12 Valid, 1395 Invalid, 1 Unknown, 0 Unchecked, 9299.58ms Time] [2021-11-12 23:33:32,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47477 states. [2021-11-12 23:33:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47477 to 47475. [2021-11-12 23:33:36,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47475 states, 31671 states have (on average 1.2459979160746424) internal successors, (39462), 32430 states have internal predecessors, (39462), 12322 states have call successors, (12322), 3481 states have call predecessors, (12322), 3481 states have return successors, (12322), 12187 states have call predecessors, (12322), 12322 states have call successors, (12322) [2021-11-12 23:33:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47475 states to 47475 states and 64106 transitions. [2021-11-12 23:33:36,947 INFO L78 Accepts]: Start accepts. Automaton has 47475 states and 64106 transitions. Word has length 367 [2021-11-12 23:33:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:33:36,947 INFO L470 AbstractCegarLoop]: Abstraction has 47475 states and 64106 transitions. [2021-11-12 23:33:36,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-12 23:33:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 47475 states and 64106 transitions. [2021-11-12 23:33:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-12 23:33:37,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:37,186 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:33:37,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-12 23:33:37,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:33:37,403 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:33:37,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:37,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1546937166, now seen corresponding path program 1 times [2021-11-12 23:33:37,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:33:37,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881245838] [2021-11-12 23:33:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:37,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:33:37,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:33:37,408 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:33:37,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-12 23:33:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:43,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:33:43,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 273 proven. 3 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2021-11-12 23:33:44,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-11-12 23:33:45,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:33:45,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881245838] [2021-11-12 23:33:45,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881245838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:33:45,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [600448740] [2021-11-12 23:33:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:45,759 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:33:45,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:33:45,760 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:33:45,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-12 23:33:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:53,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:33:53,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 273 proven. 3 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2021-11-12 23:33:54,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-11-12 23:33:55,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [600448740] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:33:55,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861736393] [2021-11-12 23:33:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:55,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:33:55,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:33:55,804 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:33:55,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-12 23:33:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:57,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:33:57,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2021-11-12 23:33:59,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2021-11-12 23:33:59,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861736393] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:33:59,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-12 23:33:59,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8, 8, 8, 8] total 16 [2021-11-12 23:33:59,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888212166] [2021-11-12 23:33:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:33:59,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:33:59,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:33:59,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:33:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:33:59,811 INFO L87 Difference]: Start difference. First operand 47475 states and 64106 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-12 23:34:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:03,248 INFO L93 Difference]: Finished difference Result 47531 states and 64194 transitions. [2021-11-12 23:34:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:34:03,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 365 [2021-11-12 23:34:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:03,252 INFO L225 Difference]: With dead ends: 47531 [2021-11-12 23:34:03,253 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:34:03,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2184 GetRequests, 2170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:34:03,341 INFO L933 BasicCegarLoop]: 3501 mSDtfsCounter, 3 mSDsluCounter, 10498 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13999 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:03,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 13999 Invalid, 6 Unknown, 0 Unchecked, 24.71ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 21.21ms Time] [2021-11-12 23:34:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:34:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:34:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:34:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:34:03,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 365 [2021-11-12 23:34:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:03,348 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:34:03,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-12 23:34:03,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:34:03,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:34:03,351 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:34:03,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:03,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:03,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:03,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8523cd94-cf82-47ab-b673-c510fe09f2f0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:34:03,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.