./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-32_7a-drivers--memstick--core--ms_block.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/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_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/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_e59812cc-a965-42a1-a00a-2de4efdfe813/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 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:57:37,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:57:37,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:57:37,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:57:37,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:57:37,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:57:37,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:57:37,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:57:37,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:57:37,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:57:37,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:57:37,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:57:37,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:57:37,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:57:37,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:57:37,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:57:37,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:57:37,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:57:37,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:57:37,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:57:37,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:57:37,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:57:37,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:57:37,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:57:37,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:57:37,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:57:37,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:57:37,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:57:37,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:57:37,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:57:37,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:57:37,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:57:37,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:57:37,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:57:37,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:57:37,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:57:37,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:57:37,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:57:37,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:57:37,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:57:37,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:57:37,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:57:38,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:57:38,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:57:38,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:57:38,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:57:38,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:57:38,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:57:38,009 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:57:38,009 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:57:38,010 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:57:38,010 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:57:38,011 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:57:38,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:57:38,011 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:57:38,012 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:57:38,012 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:57:38,012 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:57:38,013 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:57:38,013 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:57:38,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:57:38,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:57:38,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:57:38,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:57:38,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:57:38,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:57:38,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:57:38,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:57:38,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:57:38,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:57:38,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:57:38,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:38,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:57:38,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:57:38,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:57:38,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:57:38,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:57:38,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:57:38,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:57:38,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:57:38,022 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_e59812cc-a965-42a1-a00a-2de4efdfe813/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 [2022-11-03 01:57:38,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:57:38,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:57:38,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:57:38,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:57:38,400 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:57:38,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2022-11-03 01:57:38,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/data/e796fc665/873dc07b78f745b3af97d33ae88f585d/FLAG237223080 [2022-11-03 01:57:39,649 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:57:39,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2022-11-03 01:57:39,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/data/e796fc665/873dc07b78f745b3af97d33ae88f585d/FLAG237223080 [2022-11-03 01:57:39,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/data/e796fc665/873dc07b78f745b3af97d33ae88f585d [2022-11-03 01:57:39,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:57:39,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:57:39,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:39,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:57:39,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:57:39,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:39" (1/1) ... [2022-11-03 01:57:39,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e7d3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:39, skipping insertion in model container [2022-11-03 01:57:40,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:39" (1/1) ... [2022-11-03 01:57:40,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:57:40,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:57:42,416 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_e59812cc-a965-42a1-a00a-2de4efdfe813/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2022-11-03 01:57:42,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:42,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:57:43,216 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_e59812cc-a965-42a1-a00a-2de4efdfe813/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2022-11-03 01:57:43,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:43,396 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:57:43,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43 WrapperNode [2022-11-03 01:57:43,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:43,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:43,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:57:43,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:57:43,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:43,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:43,773 INFO L138 Inliner]: procedures = 306, calls = 1743, calls flagged for inlining = 109, calls inlined = 100, statements flattened = 3797 [2022-11-03 01:57:43,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:43,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:57:43,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:57:43,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:57:43,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:43,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:43,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:43,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:44,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:44,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:44,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:44,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:44,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:57:44,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:57:44,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:57:44,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:57:44,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (1/1) ... [2022-11-03 01:57:44,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:44,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:44,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:57:44,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:57:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 01:57:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 01:57:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_memstick_host [2022-11-03 01:57:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_memstick_host [2022-11-03 01:57:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 01:57:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 01:57:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:57:44,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:57:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:57:44,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:57:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure msb_stop [2022-11-03 01:57:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_stop [2022-11-03 01:57:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_pba [2022-11-03 01:57:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_pba [2022-11-03 01:57:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 01:57:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 01:57:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:57:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:57:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure blk_fetch_request [2022-11-03 01:57:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_fetch_request [2022-11-03 01:57:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 01:57:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 01:57:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-03 01:57:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-03 01:57:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:57:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:57:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:57:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:57:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure msb_switch_to_parallel [2022-11-03 01:57:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_switch_to_parallel [2022-11-03 01:57:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:57:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:57:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:57:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:57:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure msb_validate_used_block_bitmap [2022-11-03 01:57:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_validate_used_block_bitmap [2022-11-03 01:57:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:57:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:57:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure msb_verify_block [2022-11-03 01:57:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_verify_block [2022-11-03 01:57:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:57:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:57:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-03 01:57:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-03 01:57:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_msb_disk_lock [2022-11-03 01:57:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_msb_disk_lock [2022-11-03 01:57:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:57:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_write [2022-11-03 01:57:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_write [2022-11-03 01:57:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:57:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-03 01:57:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-03 01:57:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_set_drvdata [2022-11-03 01:57:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_set_drvdata [2022-11-03 01:57:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request [2022-11-03 01:57:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request [2022-11-03 01:57:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:57:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-03 01:57:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-03 01:57:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure msb_invalidate_reg_window [2022-11-03 01:57:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_invalidate_reg_window [2022-11-03 01:57:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure msb_io_work [2022-11-03 01:57:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_io_work [2022-11-03 01:57:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:57:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:57:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2022-11-03 01:57:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2022-11-03 01:57:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:57:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure msb_erase_block [2022-11-03 01:57:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_erase_block [2022-11-03 01:57:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:57:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_get_drvdata [2022-11-03 01:57:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_get_drvdata [2022-11-03 01:57:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure msb_data_clear [2022-11-03 01:57:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_data_clear [2022-11-03 01:57:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:57:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:57:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 01:57:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 01:57:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:57:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:57:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 01:57:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 01:57:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 01:57:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 01:57:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_bad_block_table [2022-11-03 01:57:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_bad_block_table [2022-11-03 01:57:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure msb_update_block [2022-11-03 01:57:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_update_block [2022-11-03 01:57:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_flush [2022-11-03 01:57:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_flush [2022-11-03 01:57:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2022-11-03 01:57:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2022-11-03 01:57:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 01:57:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 01:57:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2022-11-03 01:57:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2022-11-03 01:57:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure msb_run_state_machine [2022-11-03 01:57:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_run_state_machine [2022-11-03 01:57:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure msb_sg_copy [2022-11-03 01:57:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_sg_copy [2022-11-03 01:57:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-03 01:57:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-03 01:57:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:57:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:57:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_zero_bit [2022-11-03 01:57:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_zero_bit [2022-11-03 01:57:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_memstick_host [2022-11-03 01:57:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_memstick_host [2022-11-03 01:57:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:57:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 01:57:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 01:57:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_lba [2022-11-03 01:57:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_lba [2022-11-03 01:57:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure msb_reset [2022-11-03 01:57:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_reset [2022-11-03 01:57:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2022-11-03 01:57:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2022-11-03 01:57:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2022-11-03 01:57:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2022-11-03 01:57:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:57:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:57:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-03 01:57:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-03 01:57:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure msb_bd_getgeo [2022-11-03 01:57:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_bd_getgeo [2022-11-03 01:57:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:57:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure msb_remove [2022-11-03 01:57:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_remove [2022-11-03 01:57:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:57:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:57:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2022-11-03 01:57:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2022-11-03 01:57:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_bad [2022-11-03 01:57:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_bad [2022-11-03 01:57:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:57:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:57:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:57:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2022-11-03 01:57:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2022-11-03 01:57:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:57:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:57:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:57:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure sg_nents [2022-11-03 01:57:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_nents [2022-11-03 01:57:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:57:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_page [2022-11-03 01:57:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_page [2022-11-03 01:57:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2022-11-03 01:57:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2022-11-03 01:57:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2022-11-03 01:57:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2022-11-03 01:57:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure msb_set_overwrite_flag [2022-11-03 01:57:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_set_overwrite_flag [2022-11-03 01:57:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_bytes [2022-11-03 01:57:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_bytes [2022-11-03 01:57:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-03 01:57:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-03 01:57:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure msb_disk_release [2022-11-03 01:57:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_disk_release [2022-11-03 01:57:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_block_used [2022-11-03 01:57:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_block_used [2022-11-03 01:57:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_discard [2022-11-03 01:57:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_discard [2022-11-03 01:57:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:57:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:57:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure msb_start [2022-11-03 01:57:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_start [2022-11-03 01:57:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 01:57:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 01:57:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 01:57:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 01:57:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-03 01:57:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-03 01:57:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure msb_init_card [2022-11-03 01:57:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_init_card [2022-11-03 01:57:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2022-11-03 01:57:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2022-11-03 01:57:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 01:57:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 01:57:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:57:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_one [2022-11-03 01:57:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_one [2022-11-03 01:57:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 01:57:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 01:57:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_msb_disk_lock [2022-11-03 01:57:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_msb_disk_lock [2022-11-03 01:57:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:57:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:57:45,155 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:57:45,166 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:57:45,551 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:57:49,219 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:57:50,713 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:57:50,714 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:57:50,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:50 BoogieIcfgContainer [2022-11-03 01:57:50,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:57:50,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:57:50,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:57:50,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:57:50,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:57:39" (1/3) ... [2022-11-03 01:57:50,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a549528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:50, skipping insertion in model container [2022-11-03 01:57:50,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:43" (2/3) ... [2022-11-03 01:57:50,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a549528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:50, skipping insertion in model container [2022-11-03 01:57:50,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:50" (3/3) ... [2022-11-03 01:57:50,734 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2022-11-03 01:57:50,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:57:50,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:57:50,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:57:50,873 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;@1d8d9569, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:57:50,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:57:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 1151 states, 719 states have (on average 1.3532684283727399) internal successors, (973), 763 states have internal predecessors, (973), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) [2022-11-03 01:57:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 01:57:50,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:50,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:50,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash -896570951, now seen corresponding path program 1 times [2022-11-03 01:57:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:50,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634371698] [2022-11-03 01:57:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:50,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:57:51,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:51,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634371698] [2022-11-03 01:57:51,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634371698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:51,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:51,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:57:51,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984749084] [2022-11-03 01:57:51,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:51,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:57:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:57:51,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:51,897 INFO L87 Difference]: Start difference. First operand has 1151 states, 719 states have (on average 1.3532684283727399) internal successors, (973), 763 states have internal predecessors, (973), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 01:57:56,147 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 01:57:58,406 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 01:57:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:58,545 INFO L93 Difference]: Finished difference Result 3383 states and 4890 transitions. [2022-11-03 01:57:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:57:58,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 64 [2022-11-03 01:57:58,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:58,591 INFO L225 Difference]: With dead ends: 3383 [2022-11-03 01:57:58,591 INFO L226 Difference]: Without dead ends: 2206 [2022-11-03 01:57:58,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:58,612 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 1575 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:58,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3174 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 01:57:58,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-11-03 01:57:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2187. [2022-11-03 01:57:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 1370 states have (on average 1.3313868613138686) internal successors, (1824), 1435 states have internal predecessors, (1824), 646 states have call successors, (646), 171 states have call predecessors, (646), 170 states have return successors, (639), 623 states have call predecessors, (639), 637 states have call successors, (639) [2022-11-03 01:57:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3109 transitions. [2022-11-03 01:57:58,867 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3109 transitions. Word has length 64 [2022-11-03 01:57:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:58,868 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3109 transitions. [2022-11-03 01:57:58,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 01:57:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3109 transitions. [2022-11-03 01:57:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 01:57:58,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:58,881 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:58,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:57:58,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash 232886649, now seen corresponding path program 1 times [2022-11-03 01:57:58,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:58,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307683883] [2022-11-03 01:57:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:58,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:57:59,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:59,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307683883] [2022-11-03 01:57:59,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307683883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:59,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:59,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:57:59,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192588346] [2022-11-03 01:57:59,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:59,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:57:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:57:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:59,279 INFO L87 Difference]: Start difference. First operand 2187 states and 3109 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:58:03,928 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 01:58:06,139 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 01:58:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:06,297 INFO L93 Difference]: Finished difference Result 6469 states and 9202 transitions. [2022-11-03 01:58:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:06,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2022-11-03 01:58:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:06,344 INFO L225 Difference]: With dead ends: 6469 [2022-11-03 01:58:06,344 INFO L226 Difference]: Without dead ends: 4297 [2022-11-03 01:58:06,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:06,361 INFO L413 NwaCegarLoop]: 1756 mSDtfsCounter, 1520 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:06,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 3139 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 429 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 01:58:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2022-11-03 01:58:06,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4288. [2022-11-03 01:58:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 2693 states have (on average 1.3301151132565912) internal successors, (3582), 2811 states have internal predecessors, (3582), 1260 states have call successors, (1260), 335 states have call predecessors, (1260), 334 states have return successors, (1257), 1226 states have call predecessors, (1257), 1251 states have call successors, (1257) [2022-11-03 01:58:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 6099 transitions. [2022-11-03 01:58:06,686 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 6099 transitions. Word has length 67 [2022-11-03 01:58:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:06,688 INFO L495 AbstractCegarLoop]: Abstraction has 4288 states and 6099 transitions. [2022-11-03 01:58:06,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:58:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 6099 transitions. [2022-11-03 01:58:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 01:58:06,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:06,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:06,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:58:06,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:06,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1944821062, now seen corresponding path program 1 times [2022-11-03 01:58:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:06,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904318476] [2022-11-03 01:58:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:07,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:07,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904318476] [2022-11-03 01:58:07,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904318476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:07,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:07,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301645701] [2022-11-03 01:58:07,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:07,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:07,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:07,039 INFO L87 Difference]: Start difference. First operand 4288 states and 6099 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:10,349 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 01:58:12,542 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 01:58:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:13,598 INFO L93 Difference]: Finished difference Result 8543 states and 12151 transitions. [2022-11-03 01:58:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-03 01:58:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:13,682 INFO L225 Difference]: With dead ends: 8543 [2022-11-03 01:58:13,682 INFO L226 Difference]: Without dead ends: 8540 [2022-11-03 01:58:13,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:13,696 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 1557 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:13,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 3084 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 01:58:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2022-11-03 01:58:14,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 8534. [2022-11-03 01:58:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8534 states, 5366 states have (on average 1.3302273574357062) internal successors, (7138), 5593 states have internal predecessors, (7138), 2500 states have call successors, (2500), 668 states have call predecessors, (2500), 667 states have return successors, (2505), 2441 states have call predecessors, (2505), 2491 states have call successors, (2505) [2022-11-03 01:58:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 12143 transitions. [2022-11-03 01:58:14,536 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 12143 transitions. Word has length 68 [2022-11-03 01:58:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:14,537 INFO L495 AbstractCegarLoop]: Abstraction has 8534 states and 12143 transitions. [2022-11-03 01:58:14,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 12143 transitions. [2022-11-03 01:58:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 01:58:14,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:14,540 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:14,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:58:14,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash 159416656, now seen corresponding path program 1 times [2022-11-03 01:58:14,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:14,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84277851] [2022-11-03 01:58:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:14,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:14,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:14,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84277851] [2022-11-03 01:58:14,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84277851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:14,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:14,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:14,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487213595] [2022-11-03 01:58:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:14,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:14,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:14,855 INFO L87 Difference]: Start difference. First operand 8534 states and 12143 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:18,813 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 01:58:21,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:23,469 WARN L539 Checker$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 01:58:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:24,431 INFO L93 Difference]: Finished difference Result 8544 states and 12152 transitions. [2022-11-03 01:58:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:24,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-11-03 01:58:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:24,506 INFO L225 Difference]: With dead ends: 8544 [2022-11-03 01:58:24,507 INFO L226 Difference]: Without dead ends: 8541 [2022-11-03 01:58:24,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:24,517 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 1554 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:24,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 3087 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 405 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 01:58:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8541 states. [2022-11-03 01:58:25,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8541 to 8535. [2022-11-03 01:58:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8535 states, 5367 states have (on average 1.330165828209428) internal successors, (7139), 5594 states have internal predecessors, (7139), 2500 states have call successors, (2500), 668 states have call predecessors, (2500), 667 states have return successors, (2505), 2441 states have call predecessors, (2505), 2491 states have call successors, (2505) [2022-11-03 01:58:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8535 states to 8535 states and 12144 transitions. [2022-11-03 01:58:25,095 INFO L78 Accepts]: Start accepts. Automaton has 8535 states and 12144 transitions. Word has length 69 [2022-11-03 01:58:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:25,098 INFO L495 AbstractCegarLoop]: Abstraction has 8535 states and 12144 transitions. [2022-11-03 01:58:25,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 8535 states and 12144 transitions. [2022-11-03 01:58:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 01:58:25,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:25,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:25,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:58:25,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:25,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:25,101 INFO L85 PathProgramCache]: Analyzing trace with hash 646459785, now seen corresponding path program 1 times [2022-11-03 01:58:25,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:25,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362265056] [2022-11-03 01:58:25,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:25,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:25,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:25,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362265056] [2022-11-03 01:58:25,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362265056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:25,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:25,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:25,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329985290] [2022-11-03 01:58:25,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:25,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:25,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:25,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:25,420 INFO L87 Difference]: Start difference. First operand 8535 states and 12144 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:29,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:32,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:58:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:33,174 INFO L93 Difference]: Finished difference Result 14405 states and 20337 transitions. [2022-11-03 01:58:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:33,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-03 01:58:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:33,289 INFO L225 Difference]: With dead ends: 14405 [2022-11-03 01:58:33,290 INFO L226 Difference]: Without dead ends: 14401 [2022-11-03 01:58:33,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:33,302 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 1478 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 3293 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:33,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 3293 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 447 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 01:58:33,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14401 states. [2022-11-03 01:58:34,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 14395. [2022-11-03 01:58:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14395 states, 9062 states have (on average 1.3263076583535642) internal successors, (12019), 9426 states have internal predecessors, (12019), 4140 states have call successors, (4140), 1197 states have call predecessors, (4140), 1192 states have return successors, (4161), 4040 states have call predecessors, (4161), 4131 states have call successors, (4161) [2022-11-03 01:58:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14395 states to 14395 states and 20320 transitions. [2022-11-03 01:58:34,489 INFO L78 Accepts]: Start accepts. Automaton has 14395 states and 20320 transitions. Word has length 70 [2022-11-03 01:58:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:34,490 INFO L495 AbstractCegarLoop]: Abstraction has 14395 states and 20320 transitions. [2022-11-03 01:58:34,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 14395 states and 20320 transitions. [2022-11-03 01:58:34,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 01:58:34,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:34,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:34,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:58:34,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1435067533, now seen corresponding path program 1 times [2022-11-03 01:58:34,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:34,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051708623] [2022-11-03 01:58:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:34,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:34,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051708623] [2022-11-03 01:58:34,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051708623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:34,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:34,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:34,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500314106] [2022-11-03 01:58:34,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:34,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:34,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:34,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:34,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:34,703 INFO L87 Difference]: Start difference. First operand 14395 states and 20320 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:38,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:40,427 WARN L539 Checker$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 01:58:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:41,483 INFO L93 Difference]: Finished difference Result 22225 states and 31443 transitions. [2022-11-03 01:58:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:41,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-11-03 01:58:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:41,645 INFO L225 Difference]: With dead ends: 22225 [2022-11-03 01:58:41,645 INFO L226 Difference]: Without dead ends: 22221 [2022-11-03 01:58:41,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:41,670 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1505 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:41,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 3032 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 404 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 01:58:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22221 states. [2022-11-03 01:58:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22221 to 22214. [2022-11-03 01:58:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22214 states, 14063 states have (on average 1.3300149328023891) internal successors, (18704), 14653 states have internal predecessors, (18704), 6340 states have call successors, (6340), 1839 states have call predecessors, (6340), 1810 states have return successors, (6377), 6142 states have call predecessors, (6377), 6331 states have call successors, (6377) [2022-11-03 01:58:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22214 states to 22214 states and 31421 transitions. [2022-11-03 01:58:43,349 INFO L78 Accepts]: Start accepts. Automaton has 22214 states and 31421 transitions. Word has length 71 [2022-11-03 01:58:43,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:43,349 INFO L495 AbstractCegarLoop]: Abstraction has 22214 states and 31421 transitions. [2022-11-03 01:58:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:43,350 INFO L276 IsEmpty]: Start isEmpty. Operand 22214 states and 31421 transitions. [2022-11-03 01:58:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 01:58:43,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:43,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:58:43,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1537900084, now seen corresponding path program 1 times [2022-11-03 01:58:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:43,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211707387] [2022-11-03 01:58:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:43,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:58:43,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:43,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211707387] [2022-11-03 01:58:43,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211707387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:43,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:43,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116750859] [2022-11-03 01:58:43,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:43,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:43,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:43,555 INFO L87 Difference]: Start difference. First operand 22214 states and 31421 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:47,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:49,506 WARN L539 Checker$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 01:58:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:50,827 INFO L93 Difference]: Finished difference Result 22224 states and 31429 transitions. [2022-11-03 01:58:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-11-03 01:58:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:50,981 INFO L225 Difference]: With dead ends: 22224 [2022-11-03 01:58:50,981 INFO L226 Difference]: Without dead ends: 22211 [2022-11-03 01:58:50,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:50,999 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 1541 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:51,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 3097 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 405 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 01:58:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22211 states. [2022-11-03 01:58:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22211 to 22207. [2022-11-03 01:58:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22207 states, 14058 states have (on average 1.3297766396357946) internal successors, (18694), 14648 states have internal predecessors, (18694), 6339 states have call successors, (6339), 1838 states have call predecessors, (6339), 1809 states have return successors, (6376), 6141 states have call predecessors, (6376), 6330 states have call successors, (6376) [2022-11-03 01:58:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22207 states to 22207 states and 31409 transitions. [2022-11-03 01:58:52,683 INFO L78 Accepts]: Start accepts. Automaton has 22207 states and 31409 transitions. Word has length 72 [2022-11-03 01:58:52,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:52,686 INFO L495 AbstractCegarLoop]: Abstraction has 22207 states and 31409 transitions. [2022-11-03 01:58:52,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 01:58:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 22207 states and 31409 transitions. [2022-11-03 01:58:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 01:58:52,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:52,702 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:52,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:58:52,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2106524904, now seen corresponding path program 1 times [2022-11-03 01:58:52,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:52,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340680276] [2022-11-03 01:58:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:52,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-03 01:58:53,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:53,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340680276] [2022-11-03 01:58:53,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340680276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:53,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:53,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:53,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210173998] [2022-11-03 01:58:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:53,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:53,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:53,044 INFO L87 Difference]: Start difference. First operand 22207 states and 31409 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:58:57,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:59,542 WARN L539 Checker$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 01:59:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:00,249 INFO L93 Difference]: Finished difference Result 22313 states and 31526 transitions. [2022-11-03 01:59:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:00,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-03 01:59:00,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:00,405 INFO L225 Difference]: With dead ends: 22313 [2022-11-03 01:59:00,405 INFO L226 Difference]: Without dead ends: 22310 [2022-11-03 01:59:00,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:00,426 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 57 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:00,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 2757 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 411 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 01:59:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22310 states. [2022-11-03 01:59:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22310 to 22310. [2022-11-03 01:59:01,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22310 states, 14110 states have (on average 1.3277108433734939) internal successors, (18734), 14699 states have internal predecessors, (18734), 6370 states have call successors, (6370), 1858 states have call predecessors, (6370), 1829 states have return successors, (6408), 6173 states have call predecessors, (6408), 6362 states have call successors, (6408) [2022-11-03 01:59:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22310 states to 22310 states and 31512 transitions. [2022-11-03 01:59:02,069 INFO L78 Accepts]: Start accepts. Automaton has 22310 states and 31512 transitions. Word has length 109 [2022-11-03 01:59:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:02,070 INFO L495 AbstractCegarLoop]: Abstraction has 22310 states and 31512 transitions. [2022-11-03 01:59:02,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 01:59:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 22310 states and 31512 transitions. [2022-11-03 01:59:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-03 01:59:02,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:02,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:02,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:59:02,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:02,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1056481041, now seen corresponding path program 1 times [2022-11-03 01:59:02,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:02,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777427200] [2022-11-03 01:59:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:02,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 01:59:02,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:02,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777427200] [2022-11-03 01:59:02,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777427200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:02,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:02,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657025706] [2022-11-03 01:59:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:02,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:02,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:02,345 INFO L87 Difference]: Start difference. First operand 22310 states and 31512 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:59:07,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:09,877 WARN L539 Checker$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 01:59:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:10,805 INFO L93 Difference]: Finished difference Result 57016 states and 80113 transitions. [2022-11-03 01:59:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:10,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 125 [2022-11-03 01:59:10,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:11,006 INFO L225 Difference]: With dead ends: 57016 [2022-11-03 01:59:11,007 INFO L226 Difference]: Without dead ends: 34721 [2022-11-03 01:59:11,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:11,154 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 944 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:11,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 3009 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 440 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 01:59:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34721 states. [2022-11-03 01:59:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34721 to 34678. [2022-11-03 01:59:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34678 states, 22272 states have (on average 1.333423132183908) internal successors, (29698), 23131 states have internal predecessors, (29698), 9406 states have call successors, (9406), 3036 states have call predecessors, (9406), 2999 states have return successors, (9444), 9117 states have call predecessors, (9444), 9398 states have call successors, (9444) [2022-11-03 01:59:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34678 states to 34678 states and 48548 transitions. [2022-11-03 01:59:13,986 INFO L78 Accepts]: Start accepts. Automaton has 34678 states and 48548 transitions. Word has length 125 [2022-11-03 01:59:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:13,987 INFO L495 AbstractCegarLoop]: Abstraction has 34678 states and 48548 transitions. [2022-11-03 01:59:13,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:59:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand 34678 states and 48548 transitions. [2022-11-03 01:59:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 01:59:14,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:14,021 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:59:14,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:59:14,022 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1908370995, now seen corresponding path program 1 times [2022-11-03 01:59:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:14,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547110683] [2022-11-03 01:59:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-03 01:59:14,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:14,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547110683] [2022-11-03 01:59:14,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547110683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:14,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:14,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631705840] [2022-11-03 01:59:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:14,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:14,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:14,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:14,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:14,346 INFO L87 Difference]: Start difference. First operand 34678 states and 48548 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 01:59:20,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:22,519 WARN L539 Checker$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 01:59:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:24,259 INFO L93 Difference]: Finished difference Result 83821 states and 117247 transitions. [2022-11-03 01:59:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 161 [2022-11-03 01:59:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:24,518 INFO L225 Difference]: With dead ends: 83821 [2022-11-03 01:59:24,518 INFO L226 Difference]: Without dead ends: 49166 [2022-11-03 01:59:24,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:24,643 INFO L413 NwaCegarLoop]: 2423 mSDtfsCounter, 1325 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 3746 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:24,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 3746 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 570 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 01:59:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49166 states. [2022-11-03 01:59:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49166 to 49121. [2022-11-03 01:59:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49121 states, 31828 states have (on average 1.3355536006032425) internal successors, (42508), 32994 states have internal predecessors, (42508), 12995 states have call successors, (12995), 4346 states have call predecessors, (12995), 4297 states have return successors, (13049), 12597 states have call predecessors, (13049), 12987 states have call successors, (13049) [2022-11-03 01:59:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49121 states to 49121 states and 68552 transitions. [2022-11-03 01:59:27,914 INFO L78 Accepts]: Start accepts. Automaton has 49121 states and 68552 transitions. Word has length 161 [2022-11-03 01:59:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:27,914 INFO L495 AbstractCegarLoop]: Abstraction has 49121 states and 68552 transitions. [2022-11-03 01:59:27,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 01:59:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 49121 states and 68552 transitions. [2022-11-03 01:59:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-03 01:59:28,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:28,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:28,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:59:28,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:28,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:28,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1486403432, now seen corresponding path program 1 times [2022-11-03 01:59:28,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:28,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855269005] [2022-11-03 01:59:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:28,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 01:59:28,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:28,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855269005] [2022-11-03 01:59:28,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855269005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:28,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:28,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:28,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800437018] [2022-11-03 01:59:28,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:28,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:28,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:28,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:28,765 INFO L87 Difference]: Start difference. First operand 49121 states and 68552 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:59:32,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:36,127 WARN L539 Checker$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 01:59:38,436 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 01:59:39,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:39,706 INFO L93 Difference]: Finished difference Result 51090 states and 70923 transitions. [2022-11-03 01:59:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:39,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 185 [2022-11-03 01:59:39,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:39,971 INFO L225 Difference]: With dead ends: 51090 [2022-11-03 01:59:39,972 INFO L226 Difference]: Without dead ends: 51087 [2022-11-03 01:59:39,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:39,998 INFO L413 NwaCegarLoop]: 1691 mSDtfsCounter, 662 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:39,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 3047 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 461 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 01:59:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51087 states. [2022-11-03 01:59:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51087 to 51071. [2022-11-03 01:59:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51071 states, 32990 states have (on average 1.3320400121248863) internal successors, (43944), 34197 states have internal predecessors, (43944), 13442 states have call successors, (13442), 4686 states have call predecessors, (13442), 4638 states have return successors, (13507), 13029 states have call predecessors, (13507), 13435 states have call successors, (13507) [2022-11-03 01:59:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51071 states to 51071 states and 70893 transitions. [2022-11-03 01:59:42,600 INFO L78 Accepts]: Start accepts. Automaton has 51071 states and 70893 transitions. Word has length 185 [2022-11-03 01:59:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:42,601 INFO L495 AbstractCegarLoop]: Abstraction has 51071 states and 70893 transitions. [2022-11-03 01:59:42,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:59:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 51071 states and 70893 transitions. [2022-11-03 01:59:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-03 01:59:42,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:42,698 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:42,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:59:42,699 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash -749769586, now seen corresponding path program 1 times [2022-11-03 01:59:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:42,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437359546] [2022-11-03 01:59:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:49,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:59:49,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255044892] [2022-11-03 01:59:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:49,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:49,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:49,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:49,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:00:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:10,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 55741 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:00:10,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 02:00:11,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:11,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437359546] [2022-11-03 02:00:11,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:00:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255044892] [2022-11-03 02:00:11,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255044892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:11,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:11,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:11,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33118473] [2022-11-03 02:00:11,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:11,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:11,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:11,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:11,329 INFO L87 Difference]: Start difference. First operand 51071 states and 70893 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:00:14,276 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 02:00:18,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:20,562 WARN L539 Checker$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 02:00:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:22,727 INFO L93 Difference]: Finished difference Result 126070 states and 174931 transitions. [2022-11-03 02:00:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 225 [2022-11-03 02:00:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:23,273 INFO L225 Difference]: With dead ends: 126070 [2022-11-03 02:00:23,273 INFO L226 Difference]: Without dead ends: 75022 [2022-11-03 02:00:23,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 223 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 02:00:23,432 INFO L413 NwaCegarLoop]: 1711 mSDtfsCounter, 1437 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:23,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 3066 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 418 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:00:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75022 states. [2022-11-03 02:00:26,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75022 to 74703. [2022-11-03 02:00:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74703 states, 48301 states have (on average 1.3323119604148983) internal successors, (64352), 50061 states have internal predecessors, (64352), 19554 states have call successors, (19554), 6907 states have call predecessors, (19554), 6847 states have return successors, (19735), 18967 states have call predecessors, (19735), 19547 states have call successors, (19735) [2022-11-03 02:00:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74703 states to 74703 states and 103641 transitions. [2022-11-03 02:00:26,645 INFO L78 Accepts]: Start accepts. Automaton has 74703 states and 103641 transitions. Word has length 225 [2022-11-03 02:00:26,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:26,646 INFO L495 AbstractCegarLoop]: Abstraction has 74703 states and 103641 transitions. [2022-11-03 02:00:26,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:00:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand 74703 states and 103641 transitions. [2022-11-03 02:00:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-03 02:00:26,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:26,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:26,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:26,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:00:26,946 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:26,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1216897152, now seen corresponding path program 1 times [2022-11-03 02:00:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:26,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928546548] [2022-11-03 02:00:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:32,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:00:32,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931770655] [2022-11-03 02:00:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:32,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:32,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:32,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:00:32,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:00:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:57,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 55729 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:00:57,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-03 02:00:57,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:57,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:57,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928546548] [2022-11-03 02:00:57,654 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:00:57,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931770655] [2022-11-03 02:00:57,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931770655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:57,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:57,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:00:57,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059756327] [2022-11-03 02:00:57,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:57,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:00:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:57,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:00:57,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:00:57,657 INFO L87 Difference]: Start difference. First operand 74703 states and 103641 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:01:02,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:05,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:01:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:07,487 INFO L93 Difference]: Finished difference Result 149538 states and 207496 transitions. [2022-11-03 02:01:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:01:07,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 225 [2022-11-03 02:01:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:07,878 INFO L225 Difference]: With dead ends: 149538 [2022-11-03 02:01:07,878 INFO L226 Difference]: Without dead ends: 74831 [2022-11-03 02:01:08,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:01:08,105 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 26 mSDsluCounter, 3192 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:08,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 4193 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 622 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:01:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74831 states. [2022-11-03 02:01:11,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74831 to 74715. [2022-11-03 02:01:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74715 states, 48313 states have (on average 1.332043135387991) internal successors, (64355), 50073 states have internal predecessors, (64355), 19554 states have call successors, (19554), 6907 states have call predecessors, (19554), 6847 states have return successors, (19735), 18967 states have call predecessors, (19735), 19547 states have call successors, (19735) [2022-11-03 02:01:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74715 states to 74715 states and 103644 transitions. [2022-11-03 02:01:11,656 INFO L78 Accepts]: Start accepts. Automaton has 74715 states and 103644 transitions. Word has length 225 [2022-11-03 02:01:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:11,657 INFO L495 AbstractCegarLoop]: Abstraction has 74715 states and 103644 transitions. [2022-11-03 02:01:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:01:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 74715 states and 103644 transitions. [2022-11-03 02:01:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-03 02:01:11,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:11,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:11,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:01:11,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:11,945 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1217999091, now seen corresponding path program 1 times [2022-11-03 02:01:11,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:11,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663630357] [2022-11-03 02:01:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:11,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:17,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:01:17,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302092086] [2022-11-03 02:01:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:17,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:17,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:17,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:18,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59812cc-a965-42a1-a00a-2de4efdfe813/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process