./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:22:56,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:22:56,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:22:56,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:22:56,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:22:56,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:22:56,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:22:56,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:22:56,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:22:56,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:22:56,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:22:56,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:22:56,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:22:56,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:22:56,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:22:56,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:22:56,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:22:56,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:22:56,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:22:56,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:22:56,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:22:56,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:22:56,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:22:56,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:22:56,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:22:56,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:22:56,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:22:56,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:22:56,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:22:56,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:22:56,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:22:56,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:22:56,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:22:56,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:22:56,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:22:56,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:22:56,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:22:56,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:22:56,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:22:56,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:22:56,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:22:56,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:22:56,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:22:56,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:22:56,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:22:56,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:22:56,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:22:56,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:22:56,937 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:22:56,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:22:56,938 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:22:56,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:22:56,939 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:22:56,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:22:56,940 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:22:56,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:22:56,940 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:22:56,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:22:56,941 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:22:56,941 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:22:56,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:22:56,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:22:56,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:22:56,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:22:56,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:22:56,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:22:56,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:22:56,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:22:56,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:22:56,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:22:56,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:22:56,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:22:56,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:22:56,947 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:22:56,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:22:56,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:22:56,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:22:56,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:22:56,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:22:56,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:22:56,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 [2022-11-03 02:22:57,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:22:57,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:22:57,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:22:57,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:22:57,332 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:22:57,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-03 02:22:57,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/data/621355707/d03a972c86eb466a95bf4b063c97b0ab/FLAG763bf5bed [2022-11-03 02:22:58,423 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:22:58,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-03 02:22:58,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/data/621355707/d03a972c86eb466a95bf4b063c97b0ab/FLAG763bf5bed [2022-11-03 02:22:58,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/data/621355707/d03a972c86eb466a95bf4b063c97b0ab [2022-11-03 02:22:58,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:22:58,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:22:58,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:22:58,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:22:58,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:22:58,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:22:58" (1/1) ... [2022-11-03 02:22:58,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757d0265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:58, skipping insertion in model container [2022-11-03 02:22:58,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:22:58" (1/1) ... [2022-11-03 02:22:58,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:22:58,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:23:02,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2022-11-03 02:23:02,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:02,897 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:23:03,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2022-11-03 02:23:03,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:03,617 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:23:03,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03 WrapperNode [2022-11-03 02:23:03,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:03,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:03,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:23:03,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:23:03,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:03,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,072 INFO L138 Inliner]: procedures = 440, calls = 4514, calls flagged for inlining = 181, calls inlined = 178, statements flattened = 8251 [2022-11-03 02:23:04,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:04,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:23:04,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:23:04,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:23:04,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:23:04,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:23:04,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:23:04,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:23:04,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (1/1) ... [2022-11-03 02:23:04,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:04,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:04,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:23:04,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:23:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2022-11-03 02:23:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2022-11-03 02:23:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-03 02:23:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-03 02:23:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2022-11-03 02:23:04,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2022-11-03 02:23:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2022-11-03 02:23:04,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2022-11-03 02:23:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:23:04,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:23:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:23:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:23:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:23:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:23:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:23:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:23:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2022-11-03 02:23:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2022-11-03 02:23:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2022-11-03 02:23:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2022-11-03 02:23:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2022-11-03 02:23:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2022-11-03 02:23:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-03 02:23:04,775 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-03 02:23:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2022-11-03 02:23:04,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2022-11-03 02:23:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-03 02:23:04,775 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-03 02:23:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:23:04,776 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:23:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-03 02:23:04,776 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-03 02:23:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:23:04,777 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:23:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:23:04,777 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:23:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2022-11-03 02:23:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2022-11-03 02:23:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2022-11-03 02:23:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2022-11-03 02:23:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2022-11-03 02:23:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2022-11-03 02:23:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2022-11-03 02:23:04,779 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2022-11-03 02:23:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2022-11-03 02:23:04,779 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2022-11-03 02:23:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2022-11-03 02:23:04,780 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2022-11-03 02:23:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:23:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:23:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:23:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:23:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:23:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2022-11-03 02:23:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2022-11-03 02:23:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2022-11-03 02:23:04,783 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2022-11-03 02:23:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:23:04,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:23:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2022-11-03 02:23:04,784 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2022-11-03 02:23:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:23:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2022-11-03 02:23:04,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2022-11-03 02:23:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:23:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:23:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:23:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:23:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2022-11-03 02:23:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2022-11-03 02:23:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:23:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2022-11-03 02:23:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2022-11-03 02:23:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2022-11-03 02:23:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2022-11-03 02:23:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:23:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_10 [2022-11-03 02:23:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_10 [2022-11-03 02:23:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:23:04,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:23:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2022-11-03 02:23:04,788 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2022-11-03 02:23:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:23:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:23:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-11-03 02:23:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-11-03 02:23:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:23:04,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:23:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-03 02:23:04,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-03 02:23:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2022-11-03 02:23:04,791 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2022-11-03 02:23:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2022-11-03 02:23:04,792 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2022-11-03 02:23:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:23:04,792 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:23:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:23:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:23:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2022-11-03 02:23:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2022-11-03 02:23:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2022-11-03 02:23:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2022-11-03 02:23:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2022-11-03 02:23:04,794 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2022-11-03 02:23:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:23:04,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:23:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-03 02:23:04,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-03 02:23:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:23:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:23:04,796 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:23:04,799 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:23:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-03 02:23:04,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-03 02:23:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2022-11-03 02:23:04,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2022-11-03 02:23:04,801 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:23:04,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:23:04,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:23:04,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:23:04,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:23:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_10 [2022-11-03 02:23:04,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_10 [2022-11-03 02:23:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2022-11-03 02:23:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2022-11-03 02:23:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2022-11-03 02:23:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2022-11-03 02:23:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2022-11-03 02:23:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2022-11-03 02:23:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2022-11-03 02:23:04,810 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2022-11-03 02:23:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2022-11-03 02:23:04,810 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2022-11-03 02:23:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2022-11-03 02:23:04,810 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2022-11-03 02:23:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2022-11-03 02:23:04,811 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2022-11-03 02:23:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2022-11-03 02:23:04,811 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2022-11-03 02:23:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2022-11-03 02:23:04,811 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2022-11-03 02:23:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-03 02:23:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-03 02:23:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:23:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:23:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:23:04,812 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:23:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2022-11-03 02:23:04,813 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2022-11-03 02:23:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:23:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:23:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2022-11-03 02:23:04,813 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2022-11-03 02:23:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:23:04,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:23:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2022-11-03 02:23:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2022-11-03 02:23:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 02:23:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 02:23:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2022-11-03 02:23:04,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2022-11-03 02:23:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2022-11-03 02:23:04,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2022-11-03 02:23:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_9 [2022-11-03 02:23:04,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_9 [2022-11-03 02:23:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2022-11-03 02:23:04,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2022-11-03 02:23:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2022-11-03 02:23:04,816 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2022-11-03 02:23:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2022-11-03 02:23:04,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2022-11-03 02:23:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-11-03 02:23:04,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-11-03 02:23:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2022-11-03 02:23:04,816 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2022-11-03 02:23:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2022-11-03 02:23:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2022-11-03 02:23:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2022-11-03 02:23:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2022-11-03 02:23:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:23:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:23:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-03 02:23:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-03 02:23:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:23:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:23:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2022-11-03 02:23:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2022-11-03 02:23:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:23:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:23:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-11-03 02:23:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-11-03 02:23:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:23:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:23:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2022-11-03 02:23:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2022-11-03 02:23:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2022-11-03 02:23:04,820 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2022-11-03 02:23:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:23:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2022-11-03 02:23:04,820 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2022-11-03 02:23:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:23:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2022-11-03 02:23:04,821 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2022-11-03 02:23:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:23:04,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:23:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:23:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2022-11-03 02:23:04,821 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2022-11-03 02:23:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 02:23:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 02:23:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 02:23:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 02:23:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure _ieee80211_hw_set [2022-11-03 02:23:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure _ieee80211_hw_set [2022-11-03 02:23:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2022-11-03 02:23:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2022-11-03 02:23:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2022-11-03 02:23:04,823 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2022-11-03 02:23:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2022-11-03 02:23:04,823 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2022-11-03 02:23:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_beacon_work [2022-11-03 02:23:04,823 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_beacon_work [2022-11-03 02:23:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2022-11-03 02:23:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2022-11-03 02:23:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-03 02:23:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-03 02:23:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2022-11-03 02:23:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2022-11-03 02:23:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2022-11-03 02:23:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2022-11-03 02:23:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2022-11-03 02:23:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2022-11-03 02:23:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:23:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2022-11-03 02:23:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2022-11-03 02:23:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-03 02:23:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-03 02:23:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:23:04,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:23:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2022-11-03 02:23:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2022-11-03 02:23:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2022-11-03 02:23:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2022-11-03 02:23:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2022-11-03 02:23:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2022-11-03 02:23:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:23:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:23:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:23:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:23:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-03 02:23:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-03 02:23:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2022-11-03 02:23:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2022-11-03 02:23:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-03 02:23:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-03 02:23:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2022-11-03 02:23:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2022-11-03 02:23:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 02:23:04,836 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 02:23:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:23:04,836 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:23:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2022-11-03 02:23:04,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2022-11-03 02:23:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2022-11-03 02:23:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2022-11-03 02:23:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:23:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2022-11-03 02:23:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2022-11-03 02:23:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2022-11-03 02:23:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2022-11-03 02:23:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2022-11-03 02:23:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2022-11-03 02:23:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2022-11-03 02:23:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2022-11-03 02:23:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-03 02:23:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-03 02:23:05,939 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:23:05,942 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:23:06,436 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:23:14,979 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:23:17,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:23:17,475 INFO L300 CfgBuilder]: Removed 78 assume(true) statements. [2022-11-03 02:23:17,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:17 BoogieIcfgContainer [2022-11-03 02:23:17,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:23:17,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:23:17,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:23:17,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:23:17,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:22:58" (1/3) ... [2022-11-03 02:23:17,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f47337d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:17, skipping insertion in model container [2022-11-03 02:23:17,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:03" (2/3) ... [2022-11-03 02:23:17,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f47337d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:17, skipping insertion in model container [2022-11-03 02:23:17,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:17" (3/3) ... [2022-11-03 02:23:17,495 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-03 02:23:17,516 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:23:17,517 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:23:17,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:23:17,676 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58a0adde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:23:17,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:23:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 3264 states, 1674 states have (on average 1.3088410991636799) internal successors, (2191), 1829 states have internal predecessors, (2191), 1537 states have call successors, (1537), 130 states have call predecessors, (1537), 129 states have return successors, (1522), 1485 states have call predecessors, (1522), 1522 states have call successors, (1522) [2022-11-03 02:23:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-03 02:23:17,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:17,731 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:17,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1011026581, now seen corresponding path program 1 times [2022-11-03 02:23:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:17,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784898435] [2022-11-03 02:23:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:17,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2022-11-03 02:23:19,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:19,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784898435] [2022-11-03 02:23:19,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784898435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:19,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:19,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:19,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352680019] [2022-11-03 02:23:19,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:19,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:19,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:19,143 INFO L87 Difference]: Start difference. First operand has 3264 states, 1674 states have (on average 1.3088410991636799) internal successors, (2191), 1829 states have internal predecessors, (2191), 1537 states have call successors, (1537), 130 states have call predecessors, (1537), 129 states have return successors, (1522), 1485 states have call predecessors, (1522), 1522 states have call successors, (1522) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-03 02:23:23,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:23:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:24,490 INFO L93 Difference]: Finished difference Result 8569 states and 13859 transitions. [2022-11-03 02:23:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:24,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 212 [2022-11-03 02:23:24,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:24,579 INFO L225 Difference]: With dead ends: 8569 [2022-11-03 02:23:24,580 INFO L226 Difference]: Without dead ends: 5303 [2022-11-03 02:23:24,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:24,618 INFO L413 NwaCegarLoop]: 6237 mSDtfsCounter, 3733 mSDsluCounter, 4659 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3734 SdHoareTripleChecker+Valid, 10651 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:24,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3734 Valid, 10651 Invalid, 618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 613 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:23:24,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5303 states. [2022-11-03 02:23:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5303 to 5299. [2022-11-03 02:23:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 2457 states have (on average 1.2938542938542938) internal successors, (3179), 2568 states have internal predecessors, (3179), 2606 states have call successors, (2606), 236 states have call predecessors, (2606), 235 states have return successors, (2606), 2552 states have call predecessors, (2606), 2605 states have call successors, (2606) [2022-11-03 02:23:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 8391 transitions. [2022-11-03 02:23:25,485 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 8391 transitions. Word has length 212 [2022-11-03 02:23:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:25,490 INFO L495 AbstractCegarLoop]: Abstraction has 5299 states and 8391 transitions. [2022-11-03 02:23:25,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-03 02:23:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 8391 transitions. [2022-11-03 02:23:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-03 02:23:25,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:25,514 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:25,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:23:25,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 541237849, now seen corresponding path program 1 times [2022-11-03 02:23:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:25,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425594192] [2022-11-03 02:23:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:25,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:25,790 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:23:25,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805564524] [2022-11-03 02:23:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:25,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:25,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:25,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:25,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:23:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:27,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 5849 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:23:27,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:23:28,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:28,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425594192] [2022-11-03 02:23:28,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:23:28,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805564524] [2022-11-03 02:23:28,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805564524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:28,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:28,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:23:28,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737264650] [2022-11-03 02:23:28,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:28,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:28,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:28,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:28,226 INFO L87 Difference]: Start difference. First operand 5299 states and 8391 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:23:32,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:34,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:23:38,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:38,209 INFO L93 Difference]: Finished difference Result 15843 states and 25098 transitions. [2022-11-03 02:23:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:23:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 251 [2022-11-03 02:23:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:38,334 INFO L225 Difference]: With dead ends: 15843 [2022-11-03 02:23:38,334 INFO L226 Difference]: Without dead ends: 10581 [2022-11-03 02:23:38,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:23:38,403 INFO L413 NwaCegarLoop]: 5946 mSDtfsCounter, 4662 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 22257 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:38,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 22257 Invalid, 1029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1024 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:23:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10581 states. [2022-11-03 02:23:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10581 to 10562. [2022-11-03 02:23:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10562 states, 4903 states have (on average 1.2951254334081175) internal successors, (6350), 5124 states have internal predecessors, (6350), 5187 states have call successors, (5187), 472 states have call predecessors, (5187), 471 states have return successors, (5191), 5079 states have call predecessors, (5191), 5186 states have call successors, (5191) [2022-11-03 02:23:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10562 states to 10562 states and 16728 transitions. [2022-11-03 02:23:39,793 INFO L78 Accepts]: Start accepts. Automaton has 10562 states and 16728 transitions. Word has length 251 [2022-11-03 02:23:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:39,795 INFO L495 AbstractCegarLoop]: Abstraction has 10562 states and 16728 transitions. [2022-11-03 02:23:39,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:23:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10562 states and 16728 transitions. [2022-11-03 02:23:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-03 02:23:39,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:39,806 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:39,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:23:40,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:40,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1701224050, now seen corresponding path program 1 times [2022-11-03 02:23:40,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:40,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823727749] [2022-11-03 02:23:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:40,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:40,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:23:40,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749219016] [2022-11-03 02:23:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:40,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:40,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:40,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:40,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:23:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:42,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 5851 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:23:42,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:23:42,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:42,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823727749] [2022-11-03 02:23:42,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:23:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749219016] [2022-11-03 02:23:42,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749219016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:42,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:42,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:23:42,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156912859] [2022-11-03 02:23:42,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:42,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:42,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:42,592 INFO L87 Difference]: Start difference. First operand 10562 states and 16728 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:23:49,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:23:50,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:52,055 INFO L93 Difference]: Finished difference Result 21130 states and 33459 transitions. [2022-11-03 02:23:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:23:52,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 252 [2022-11-03 02:23:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:52,155 INFO L225 Difference]: With dead ends: 21130 [2022-11-03 02:23:52,155 INFO L226 Difference]: Without dead ends: 10605 [2022-11-03 02:23:52,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:23:52,238 INFO L413 NwaCegarLoop]: 5946 mSDtfsCounter, 4661 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 22257 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:52,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 22257 Invalid, 1029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1025 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 02:23:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10605 states. [2022-11-03 02:23:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10605 to 10580. [2022-11-03 02:23:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10580 states, 4919 states have (on average 1.2949786541980077) internal successors, (6370), 5140 states have internal predecessors, (6370), 5187 states have call successors, (5187), 474 states have call predecessors, (5187), 473 states have return successors, (5191), 5079 states have call predecessors, (5191), 5186 states have call successors, (5191) [2022-11-03 02:23:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10580 states to 10580 states and 16748 transitions. [2022-11-03 02:23:53,403 INFO L78 Accepts]: Start accepts. Automaton has 10580 states and 16748 transitions. Word has length 252 [2022-11-03 02:23:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:53,405 INFO L495 AbstractCegarLoop]: Abstraction has 10580 states and 16748 transitions. [2022-11-03 02:23:53,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:23:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 10580 states and 16748 transitions. [2022-11-03 02:23:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-03 02:23:53,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:53,413 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:53,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:53,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:53,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:53,636 INFO L85 PathProgramCache]: Analyzing trace with hash -198435588, now seen corresponding path program 1 times [2022-11-03 02:23:53,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:53,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021645495] [2022-11-03 02:23:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:53,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:53,868 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:23:53,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502435878] [2022-11-03 02:23:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:53,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:53,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:53,870 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:53,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:23:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:55,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 5853 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:23:55,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:23:56,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:56,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:56,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021645495] [2022-11-03 02:23:56,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:23:56,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502435878] [2022-11-03 02:23:56,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502435878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:56,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:56,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:23:56,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533009989] [2022-11-03 02:23:56,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:56,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:23:56,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:56,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:23:56,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:23:56,088 INFO L87 Difference]: Start difference. First operand 10580 states and 16748 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:23:57,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:01,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:03,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:05,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:24:08,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:10,427 INFO L93 Difference]: Finished difference Result 21172 states and 33503 transitions. [2022-11-03 02:24:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:10,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 253 [2022-11-03 02:24:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:10,524 INFO L225 Difference]: With dead ends: 21172 [2022-11-03 02:24:10,524 INFO L226 Difference]: Without dead ends: 10629 [2022-11-03 02:24:10,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:24:10,604 INFO L413 NwaCegarLoop]: 5946 mSDtfsCounter, 4660 mSDsluCounter, 17057 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 22257 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:10,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 22257 Invalid, 1030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1024 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 02:24:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10629 states. [2022-11-03 02:24:11,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10629 to 10598. [2022-11-03 02:24:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10598 states, 4935 states have (on average 1.2948328267477203) internal successors, (6390), 5156 states have internal predecessors, (6390), 5187 states have call successors, (5187), 476 states have call predecessors, (5187), 475 states have return successors, (5191), 5079 states have call predecessors, (5191), 5186 states have call successors, (5191) [2022-11-03 02:24:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10598 states to 10598 states and 16768 transitions. [2022-11-03 02:24:11,861 INFO L78 Accepts]: Start accepts. Automaton has 10598 states and 16768 transitions. Word has length 253 [2022-11-03 02:24:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:11,863 INFO L495 AbstractCegarLoop]: Abstraction has 10598 states and 16768 transitions. [2022-11-03 02:24:11,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:24:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 10598 states and 16768 transitions. [2022-11-03 02:24:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-03 02:24:11,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:11,871 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 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] [2022-11-03 02:24:11,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:12,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:12,085 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:12,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:12,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2073230283, now seen corresponding path program 1 times [2022-11-03 02:24:12,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:12,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497961264] [2022-11-03 02:24:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:12,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:24:12,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829251150] [2022-11-03 02:24:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:12,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:12,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:12,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:12,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:24:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:14,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 5847 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:24:14,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:24:14,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:14,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:14,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497961264] [2022-11-03 02:24:14,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:24:14,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829251150] [2022-11-03 02:24:14,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829251150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:14,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:14,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:24:14,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551845800] [2022-11-03 02:24:14,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:14,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:14,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:14,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:14,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:14,444 INFO L87 Difference]: Start difference. First operand 10598 states and 16768 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:24:16,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:21,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:25,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:24:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:26,062 INFO L93 Difference]: Finished difference Result 26465 states and 41848 transitions. [2022-11-03 02:24:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:26,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 250 [2022-11-03 02:24:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:26,170 INFO L225 Difference]: With dead ends: 26465 [2022-11-03 02:24:26,171 INFO L226 Difference]: Without dead ends: 15904 [2022-11-03 02:24:26,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:24:26,234 INFO L413 NwaCegarLoop]: 6277 mSDtfsCounter, 4634 mSDsluCounter, 17760 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 23264 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:26,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4641 Valid, 23264 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1069 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 02:24:26,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15904 states. [2022-11-03 02:24:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15904 to 15781. [2022-11-03 02:24:28,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15781 states, 7331 states have (on average 1.2954576456145137) internal successors, (9497), 7658 states have internal predecessors, (9497), 7742 states have call successors, (7742), 708 states have call predecessors, (7742), 707 states have return successors, (7750), 7578 states have call predecessors, (7750), 7741 states have call successors, (7750) [2022-11-03 02:24:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15781 states to 15781 states and 24989 transitions. [2022-11-03 02:24:28,154 INFO L78 Accepts]: Start accepts. Automaton has 15781 states and 24989 transitions. Word has length 250 [2022-11-03 02:24:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:28,155 INFO L495 AbstractCegarLoop]: Abstraction has 15781 states and 24989 transitions. [2022-11-03 02:24:28,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:24:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 15781 states and 24989 transitions. [2022-11-03 02:24:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-03 02:24:28,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:28,169 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 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] [2022-11-03 02:24:28,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:28,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:28,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash 636708961, now seen corresponding path program 1 times [2022-11-03 02:24:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:28,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820700457] [2022-11-03 02:24:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:28,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:28,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:24:28,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139346515] [2022-11-03 02:24:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:28,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:28,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:28,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:28,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:24:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:30,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 5841 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:24:30,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:24:30,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:30,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:30,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820700457] [2022-11-03 02:24:30,844 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:24:30,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139346515] [2022-11-03 02:24:30,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139346515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:30,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:30,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:24:30,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90297073] [2022-11-03 02:24:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:30,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:30,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:30,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:30,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:30,847 INFO L87 Difference]: Start difference. First operand 15781 states and 24989 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:24:33,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:34,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:37,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:40,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:24:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:41,473 INFO L93 Difference]: Finished difference Result 31631 states and 50053 transitions. [2022-11-03 02:24:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:24:41,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 259 [2022-11-03 02:24:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:41,583 INFO L225 Difference]: With dead ends: 31631 [2022-11-03 02:24:41,584 INFO L226 Difference]: Without dead ends: 15887 [2022-11-03 02:24:41,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:24:41,676 INFO L413 NwaCegarLoop]: 4495 mSDtfsCounter, 4647 mSDsluCounter, 9504 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 13494 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:41,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4656 Valid, 13494 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 773 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 02:24:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15887 states. [2022-11-03 02:24:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15887 to 15863. [2022-11-03 02:24:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15863 states, 7393 states have (on average 1.2946030028405249) internal successors, (9571), 7721 states have internal predecessors, (9571), 7743 states have call successors, (7743), 726 states have call predecessors, (7743), 726 states have return successors, (7754), 7579 states have call predecessors, (7754), 7742 states have call successors, (7754) [2022-11-03 02:24:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15863 states to 15863 states and 25068 transitions. [2022-11-03 02:24:43,600 INFO L78 Accepts]: Start accepts. Automaton has 15863 states and 25068 transitions. Word has length 259 [2022-11-03 02:24:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:43,602 INFO L495 AbstractCegarLoop]: Abstraction has 15863 states and 25068 transitions. [2022-11-03 02:24:43,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:24:43,602 INFO L276 IsEmpty]: Start isEmpty. Operand 15863 states and 25068 transitions. [2022-11-03 02:24:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-03 02:24:43,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:43,612 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 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] [2022-11-03 02:24:43,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:24:43,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:43,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash 439359343, now seen corresponding path program 1 times [2022-11-03 02:24:43,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:43,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384980827] [2022-11-03 02:24:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:44,041 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:24:44,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357355984] [2022-11-03 02:24:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:44,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:44,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:44,043 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:44,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:24:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:46,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 5835 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:24:46,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:24:46,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:46,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:46,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384980827] [2022-11-03 02:24:46,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:24:46,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357355984] [2022-11-03 02:24:46,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357355984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:46,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:46,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:24:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349718749] [2022-11-03 02:24:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:46,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:46,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:46,432 INFO L87 Difference]: Start difference. First operand 15863 states and 25068 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:24:51,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:54,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:56,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:59,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:25:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:01,513 INFO L93 Difference]: Finished difference Result 47622 states and 75235 transitions. [2022-11-03 02:25:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:01,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 256 [2022-11-03 02:25:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:01,706 INFO L225 Difference]: With dead ends: 47622 [2022-11-03 02:25:01,706 INFO L226 Difference]: Without dead ends: 31796 [2022-11-03 02:25:01,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:01,808 INFO L413 NwaCegarLoop]: 6191 mSDtfsCounter, 4674 mSDsluCounter, 17582 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 23003 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:01,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 23003 Invalid, 1060 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 1054 Invalid, 4 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 02:25:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31796 states. [2022-11-03 02:25:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31796 to 31636. [2022-11-03 02:25:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31636 states, 14731 states have (on average 1.295635055325504) internal successors, (19086), 15405 states have internal predecessors, (19086), 15456 states have call successors, (15456), 1448 states have call predecessors, (15456), 1448 states have return successors, (15479), 15110 states have call predecessors, (15479), 15455 states have call successors, (15479) [2022-11-03 02:25:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31636 states to 31636 states and 50021 transitions. [2022-11-03 02:25:04,870 INFO L78 Accepts]: Start accepts. Automaton has 31636 states and 50021 transitions. Word has length 256 [2022-11-03 02:25:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:04,871 INFO L495 AbstractCegarLoop]: Abstraction has 31636 states and 50021 transitions. [2022-11-03 02:25:04,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 31636 states and 50021 transitions. [2022-11-03 02:25:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-03 02:25:04,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:04,888 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 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] [2022-11-03 02:25:04,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:05,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:25:05,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:05,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1345552222, now seen corresponding path program 1 times [2022-11-03 02:25:05,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:05,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564927762] [2022-11-03 02:25:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:05,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:05,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:25:05,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712704164] [2022-11-03 02:25:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:05,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:05,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:05,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:05,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:25:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:07,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 5837 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:25:07,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:25:07,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:07,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:07,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564927762] [2022-11-03 02:25:07,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:25:07,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712704164] [2022-11-03 02:25:07,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712704164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:07,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:07,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:07,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129893366] [2022-11-03 02:25:07,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:07,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:07,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:07,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:07,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:07,914 INFO L87 Difference]: Start difference. First operand 31636 states and 50021 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:12,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:13,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:16,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:25:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:18,497 INFO L93 Difference]: Finished difference Result 48712 states and 76571 transitions. [2022-11-03 02:25:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:18,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 257 [2022-11-03 02:25:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:18,647 INFO L225 Difference]: With dead ends: 48712 [2022-11-03 02:25:18,647 INFO L226 Difference]: Without dead ends: 31818 [2022-11-03 02:25:18,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:18,731 INFO L413 NwaCegarLoop]: 4495 mSDtfsCounter, 4662 mSDsluCounter, 9491 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 13481 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:18,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 13481 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 774 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:25:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31818 states. [2022-11-03 02:25:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31818 to 31686. [2022-11-03 02:25:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31686 states, 14780 states have (on average 1.295466847090663) internal successors, (19147), 15448 states have internal predecessors, (19147), 15450 states have call successors, (15450), 1455 states have call predecessors, (15450), 1455 states have return successors, (15473), 15110 states have call predecessors, (15473), 15449 states have call successors, (15473) [2022-11-03 02:25:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31686 states to 31686 states and 50070 transitions. [2022-11-03 02:25:21,915 INFO L78 Accepts]: Start accepts. Automaton has 31686 states and 50070 transitions. Word has length 257 [2022-11-03 02:25:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:21,916 INFO L495 AbstractCegarLoop]: Abstraction has 31686 states and 50070 transitions. [2022-11-03 02:25:21,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 31686 states and 50070 transitions. [2022-11-03 02:25:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-03 02:25:21,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:21,932 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 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] [2022-11-03 02:25:21,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:22,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:22,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1729171502, now seen corresponding path program 1 times [2022-11-03 02:25:22,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:22,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524339737] [2022-11-03 02:25:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:22,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:25:22,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304363486] [2022-11-03 02:25:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:22,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:22,347 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:22,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:25:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:24,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 5839 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:25:24,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:25:24,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:24,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:24,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524339737] [2022-11-03 02:25:24,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:25:24,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304363486] [2022-11-03 02:25:24,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304363486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:24,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:24,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445666985] [2022-11-03 02:25:24,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:24,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:24,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:24,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:24,732 INFO L87 Difference]: Start difference. First operand 31686 states and 50070 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:27,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:29,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:32,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:33,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:36,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:25:37,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:37,911 INFO L93 Difference]: Finished difference Result 48416 states and 76081 transitions. [2022-11-03 02:25:37,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:37,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 258 [2022-11-03 02:25:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:38,056 INFO L225 Difference]: With dead ends: 48416 [2022-11-03 02:25:38,057 INFO L226 Difference]: Without dead ends: 31466 [2022-11-03 02:25:38,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:38,130 INFO L413 NwaCegarLoop]: 4495 mSDtfsCounter, 4661 mSDsluCounter, 9491 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 13481 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:38,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 13481 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 774 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-11-03 02:25:38,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31466 states. [2022-11-03 02:25:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31466 to 31334. [2022-11-03 02:25:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31334 states, 14576 states have (on average 1.2941822173435784) internal successors, (18864), 15202 states have internal predecessors, (18864), 15319 states have call successors, (15319), 1438 states have call predecessors, (15319), 1438 states have return successors, (15342), 14985 states have call predecessors, (15342), 15318 states have call successors, (15342) [2022-11-03 02:25:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31334 states to 31334 states and 49525 transitions. [2022-11-03 02:25:41,455 INFO L78 Accepts]: Start accepts. Automaton has 31334 states and 49525 transitions. Word has length 258 [2022-11-03 02:25:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:41,458 INFO L495 AbstractCegarLoop]: Abstraction has 31334 states and 49525 transitions. [2022-11-03 02:25:41,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 31334 states and 49525 transitions. [2022-11-03 02:25:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-03 02:25:41,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:41,476 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:41,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:41,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:41,699 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1733904829, now seen corresponding path program 1 times [2022-11-03 02:25:41,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:41,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533827768] [2022-11-03 02:25:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:41,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2022-11-03 02:25:42,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:42,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533827768] [2022-11-03 02:25:42,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533827768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:42,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:42,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105885700] [2022-11-03 02:25:42,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:42,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:42,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:42,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:42,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:42,665 INFO L87 Difference]: Start difference. First operand 31334 states and 49525 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:46,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:48,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:51,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:25:55,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:55,100 INFO L93 Difference]: Finished difference Result 90869 states and 143945 transitions. [2022-11-03 02:25:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:55,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 265 [2022-11-03 02:25:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:55,533 INFO L225 Difference]: With dead ends: 90869 [2022-11-03 02:25:55,533 INFO L226 Difference]: Without dead ends: 59572 [2022-11-03 02:25:55,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:55,657 INFO L413 NwaCegarLoop]: 6987 mSDtfsCounter, 4340 mSDsluCounter, 4637 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4345 SdHoareTripleChecker+Valid, 11388 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:55,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4345 Valid, 11388 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 613 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:25:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59572 states. [2022-11-03 02:26:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59572 to 59550. [2022-11-03 02:26:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59550 states, 27200 states have (on average 1.2893014705882353) internal successors, (35069), 28428 states have internal predecessors, (35069), 29657 states have call successors, (29657), 2692 states have call predecessors, (29657), 2692 states have return successors, (29716), 29001 states have call predecessors, (29716), 29656 states have call successors, (29716) [2022-11-03 02:26:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59550 states to 59550 states and 94442 transitions. [2022-11-03 02:26:01,352 INFO L78 Accepts]: Start accepts. Automaton has 59550 states and 94442 transitions. Word has length 265 [2022-11-03 02:26:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:01,353 INFO L495 AbstractCegarLoop]: Abstraction has 59550 states and 94442 transitions. [2022-11-03 02:26:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:26:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 59550 states and 94442 transitions. [2022-11-03 02:26:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-03 02:26:01,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:01,395 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 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] [2022-11-03 02:26:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:26:01,396 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1181721346, now seen corresponding path program 1 times [2022-11-03 02:26:01,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:01,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199761341] [2022-11-03 02:26:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:01,627 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:01,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779209578] [2022-11-03 02:26:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:01,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:01,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:01,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:01,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d85605f-faf2-46c4-a937-7799bb6234fd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:26:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:03,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 5920 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:26:03,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:26:04,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:04,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:04,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199761341] [2022-11-03 02:26:04,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:04,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779209578] [2022-11-03 02:26:04,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779209578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:04,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:04,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:26:04,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886930036] [2022-11-03 02:26:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:04,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:26:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:26:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:26:04,020 INFO L87 Difference]: Start difference. First operand 59550 states and 94442 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 02:26:05,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:07,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:12,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:16,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:19,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:23,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:26:29,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:29,148 INFO L93 Difference]: Finished difference Result 139603 states and 221202 transitions. [2022-11-03 02:26:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:26:29,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 267 [2022-11-03 02:26:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:29,820 INFO L225 Difference]: With dead ends: 139603 [2022-11-03 02:26:29,820 INFO L226 Difference]: Without dead ends: 99474 [2022-11-03 02:26:29,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:26:29,998 INFO L413 NwaCegarLoop]: 6035 mSDtfsCounter, 4739 mSDsluCounter, 29906 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 34596 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:29,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4746 Valid, 34596 Invalid, 1688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1682 Invalid, 4 Unknown, 0 Unchecked, 19.3s Time] [2022-11-03 02:26:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99474 states.