./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/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_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/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_df536f36-7bb8-4346-aad0-9cc2c5a8d495/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 a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:21:44,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:21:44,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:21:44,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:21:44,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:21:44,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:21:44,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:21:44,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:21:44,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:21:44,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:21:44,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:21:44,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:21:44,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:21:44,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:21:44,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:21:44,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:21:44,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:21:44,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:21:44,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:21:44,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:21:44,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:21:44,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:21:44,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:21:44,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:21:44,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:21:44,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:21:44,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:21:44,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:21:44,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:21:44,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:21:44,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:21:44,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:21:44,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:21:44,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:21:44,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:21:44,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:21:44,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:21:44,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:21:44,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:21:44,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:21:44,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:21:44,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:21:44,986 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:21:44,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:21:44,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:21:44,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:21:44,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:21:44,993 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:21:44,993 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:21:44,993 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:21:44,993 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:21:44,994 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:21:44,995 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:21:44,995 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:21:44,995 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:21:44,995 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:21:44,996 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:21:44,996 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:21:44,996 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:21:44,996 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:21:44,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:21:44,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:21:44,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:21:44,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:21:44,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:21:44,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:21:44,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:21:44,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:21:44,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:21:44,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:21:44,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:21:44,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:45,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:21:45,000 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:21:45,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:21:45,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:21:45,001 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:21:45,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:21:45,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:21:45,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:21:45,002 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_df536f36-7bb8-4346-aad0-9cc2c5a8d495/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2022-11-03 02:21:45,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:21:45,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:21:45,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:21:45,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:21:45,370 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:21:45,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-03 02:21:45,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/data/df0514ae8/d2149fddb3c5487f9d6d381e5f679feb/FLAG226b5c3d4 [2022-11-03 02:21:46,266 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:21:46,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-03 02:21:46,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/data/df0514ae8/d2149fddb3c5487f9d6d381e5f679feb/FLAG226b5c3d4 [2022-11-03 02:21:46,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/data/df0514ae8/d2149fddb3c5487f9d6d381e5f679feb [2022-11-03 02:21:46,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:21:46,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:21:46,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:46,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:21:46,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:21:46,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:46" (1/1) ... [2022-11-03 02:21:46,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e99599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:46, skipping insertion in model container [2022-11-03 02:21:46,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:46" (1/1) ... [2022-11-03 02:21:46,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:21:46,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:21:48,295 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_df536f36-7bb8-4346-aad0-9cc2c5a8d495/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2022-11-03 02:21:48,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:48,501 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:21:48,882 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_df536f36-7bb8-4346-aad0-9cc2c5a8d495/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2022-11-03 02:21:48,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:49,160 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:21:49,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49 WrapperNode [2022-11-03 02:21:49,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:49,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:49,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:21:49,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:21:49,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,504 INFO L138 Inliner]: procedures = 184, calls = 1937, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5079 [2022-11-03 02:21:49,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:49,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:21:49,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:21:49,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:21:49,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,783 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:21:49,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:21:49,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:21:49,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:21:49,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (1/1) ... [2022-11-03 02:21:49,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:49,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:21:49,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df536f36-7bb8-4346-aad0-9cc2c5a8d495/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:21:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-03 02:21:49,900 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-03 02:21:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:21:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:21:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-11-03 02:21:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-11-03 02:21:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2022-11-03 02:21:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2022-11-03 02:21:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-03 02:21:49,902 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-03 02:21:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2022-11-03 02:21:49,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2022-11-03 02:21:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2022-11-03 02:21:49,903 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2022-11-03 02:21:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:21:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2022-11-03 02:21:49,903 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2022-11-03 02:21:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-03 02:21:49,903 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-03 02:21:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-03 02:21:49,904 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-03 02:21:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-03 02:21:49,904 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-03 02:21:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2022-11-03 02:21:49,904 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2022-11-03 02:21:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2022-11-03 02:21:49,905 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2022-11-03 02:21:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:21:49,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:21:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2022-11-03 02:21:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2022-11-03 02:21:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-11-03 02:21:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-11-03 02:21:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2022-11-03 02:21:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2022-11-03 02:21:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-03 02:21:49,907 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-03 02:21:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2022-11-03 02:21:49,907 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2022-11-03 02:21:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-11-03 02:21:49,908 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-11-03 02:21:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:21:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:21:49,908 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:21:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:21:49,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:21:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-11-03 02:21:49,909 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-11-03 02:21:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2022-11-03 02:21:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2022-11-03 02:21:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:21:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:21:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2022-11-03 02:21:49,912 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2022-11-03 02:21:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2022-11-03 02:21:49,912 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2022-11-03 02:21:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2022-11-03 02:21:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2022-11-03 02:21:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2022-11-03 02:21:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2022-11-03 02:21:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:21:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:21:49,914 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:21:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-03 02:21:49,914 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-03 02:21:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:21:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:21:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2022-11-03 02:21:49,914 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2022-11-03 02:21:49,915 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-03 02:21:49,915 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-03 02:21:49,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:21:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2022-11-03 02:21:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2022-11-03 02:21:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-11-03 02:21:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-11-03 02:21:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-03 02:21:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-03 02:21:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-03 02:21:49,917 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-03 02:21:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-03 02:21:49,917 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-03 02:21:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-03 02:21:49,918 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-03 02:21:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:21:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-03 02:21:49,920 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-03 02:21:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:21:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2022-11-03 02:21:49,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2022-11-03 02:21:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-03 02:21:49,921 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-03 02:21:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:21:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-03 02:21:49,922 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-03 02:21:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2022-11-03 02:21:49,923 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2022-11-03 02:21:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2022-11-03 02:21:49,923 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2022-11-03 02:21:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:21:49,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:21:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-11-03 02:21:49,924 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-11-03 02:21:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:21:49,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:21:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2022-11-03 02:21:49,925 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2022-11-03 02:21:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:21:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-03 02:21:49,926 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-03 02:21:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:21:49,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:21:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:21:49,929 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:21:50,777 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:21:50,784 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:21:56,327 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:21:58,321 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:21:58,322 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:21:58,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:58 BoogieIcfgContainer [2022-11-03 02:21:58,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:21:58,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:21:58,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:21:58,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:21:58,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:21:46" (1/3) ... [2022-11-03 02:21:58,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9219c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:58, skipping insertion in model container [2022-11-03 02:21:58,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:49" (2/3) ... [2022-11-03 02:21:58,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9219c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:58, skipping insertion in model container [2022-11-03 02:21:58,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:58" (3/3) ... [2022-11-03 02:21:58,347 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2022-11-03 02:21:58,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:21:58,369 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:21:58,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:21:58,491 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;@14efc8a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:21:58,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:21:58,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 690 states have (on average 1.5333333333333334) internal successors, (1058), 704 states have internal predecessors, (1058), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2022-11-03 02:21:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:21:58,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:58,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 02:21:58,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash 990886339, now seen corresponding path program 1 times [2022-11-03 02:21:58,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:58,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291125884] [2022-11-03 02:21:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:58,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:59,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:59,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291125884] [2022-11-03 02:21:59,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291125884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:59,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:59,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:59,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879563096] [2022-11-03 02:21:59,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:59,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:59,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:59,596 INFO L87 Difference]: Start difference. First operand has 1020 states, 690 states have (on average 1.5333333333333334) internal successors, (1058), 704 states have internal predecessors, (1058), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:02,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:02,653 INFO L93 Difference]: Finished difference Result 3046 states and 5120 transitions. [2022-11-03 02:22:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:02,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-03 02:22:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:02,713 INFO L225 Difference]: With dead ends: 3046 [2022-11-03 02:22:02,713 INFO L226 Difference]: Without dead ends: 2023 [2022-11-03 02:22:02,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:02,734 INFO L413 NwaCegarLoop]: 1788 mSDtfsCounter, 1577 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:02,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 3232 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:22:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2022-11-03 02:22:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2005. [2022-11-03 02:22:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1362 states have (on average 1.5301027900146842) internal successors, (2084), 1378 states have internal predecessors, (2084), 543 states have call successors, (543), 101 states have call predecessors, (543), 99 states have return successors, (534), 529 states have call predecessors, (534), 534 states have call successors, (534) [2022-11-03 02:22:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 3161 transitions. [2022-11-03 02:22:02,933 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 3161 transitions. Word has length 31 [2022-11-03 02:22:02,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:02,933 INFO L495 AbstractCegarLoop]: Abstraction has 2005 states and 3161 transitions. [2022-11-03 02:22:02,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 3161 transitions. [2022-11-03 02:22:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:22:02,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:02,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:02,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:22:02,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:02,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1464344391, now seen corresponding path program 1 times [2022-11-03 02:22:02,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:02,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822599326] [2022-11-03 02:22:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:03,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822599326] [2022-11-03 02:22:03,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822599326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:03,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:03,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755487124] [2022-11-03 02:22:03,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:03,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:03,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:03,617 INFO L87 Difference]: Start difference. First operand 2005 states and 3161 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:06,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:06,737 INFO L93 Difference]: Finished difference Result 6004 states and 9465 transitions. [2022-11-03 02:22:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:06,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-03 02:22:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:06,764 INFO L225 Difference]: With dead ends: 6004 [2022-11-03 02:22:06,764 INFO L226 Difference]: Without dead ends: 4000 [2022-11-03 02:22:06,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:06,779 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1583 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3246 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:06,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 3246 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 02:22:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2022-11-03 02:22:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3983. [2022-11-03 02:22:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 2709 states have (on average 1.5289774824658546) internal successors, (4142), 2733 states have internal predecessors, (4142), 1075 states have call successors, (1075), 201 states have call predecessors, (1075), 198 states have return successors, (1066), 1056 states have call predecessors, (1066), 1066 states have call successors, (1066) [2022-11-03 02:22:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 6283 transitions. [2022-11-03 02:22:07,009 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 6283 transitions. Word has length 32 [2022-11-03 02:22:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:07,010 INFO L495 AbstractCegarLoop]: Abstraction has 3983 states and 6283 transitions. [2022-11-03 02:22:07,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 6283 transitions. [2022-11-03 02:22:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:22:07,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:07,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:07,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:22:07,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1046536679, now seen corresponding path program 1 times [2022-11-03 02:22:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:07,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038005368] [2022-11-03 02:22:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:07,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:07,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038005368] [2022-11-03 02:22:07,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038005368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:07,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:07,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316302041] [2022-11-03 02:22:07,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:07,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:07,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:07,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:07,523 INFO L87 Difference]: Start difference. First operand 3983 states and 6283 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:10,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:10,815 INFO L93 Difference]: Finished difference Result 11914 states and 18789 transitions. [2022-11-03 02:22:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:10,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-11-03 02:22:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:10,871 INFO L225 Difference]: With dead ends: 11914 [2022-11-03 02:22:10,872 INFO L226 Difference]: Without dead ends: 7932 [2022-11-03 02:22:10,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:10,906 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 1577 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:10,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3241 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 02:22:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7932 states. [2022-11-03 02:22:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7932 to 7915. [2022-11-03 02:22:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7915 states, 5385 states have (on average 1.5275766016713093) internal successors, (8226), 5425 states have internal predecessors, (8226), 2133 states have call successors, (2133), 401 states have call predecessors, (2133), 396 states have return successors, (2124), 2104 states have call predecessors, (2124), 2124 states have call successors, (2124) [2022-11-03 02:22:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7915 states to 7915 states and 12483 transitions. [2022-11-03 02:22:11,447 INFO L78 Accepts]: Start accepts. Automaton has 7915 states and 12483 transitions. Word has length 32 [2022-11-03 02:22:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:11,448 INFO L495 AbstractCegarLoop]: Abstraction has 7915 states and 12483 transitions. [2022-11-03 02:22:11,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 7915 states and 12483 transitions. [2022-11-03 02:22:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 02:22:11,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:11,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:11,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:22:11,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:11,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1298287019, now seen corresponding path program 1 times [2022-11-03 02:22:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:11,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531241150] [2022-11-03 02:22:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:11,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:11,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531241150] [2022-11-03 02:22:11,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531241150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:11,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:11,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:11,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012297236] [2022-11-03 02:22:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:11,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:11,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:11,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:11,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:11,945 INFO L87 Difference]: Start difference. First operand 7915 states and 12483 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:13,663 INFO L93 Difference]: Finished difference Result 23678 states and 37333 transitions. [2022-11-03 02:22:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:13,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-03 02:22:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:13,808 INFO L225 Difference]: With dead ends: 23678 [2022-11-03 02:22:13,809 INFO L226 Difference]: Without dead ends: 15764 [2022-11-03 02:22:13,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:13,881 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 1571 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:13,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 3260 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:22:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15764 states. [2022-11-03 02:22:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15764 to 15747. [2022-11-03 02:22:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 10713 states have (on average 1.5261831419770373) internal successors, (16350), 10785 states have internal predecessors, (16350), 4241 states have call successors, (4241), 801 states have call predecessors, (4241), 792 states have return successors, (4232), 4192 states have call predecessors, (4232), 4232 states have call successors, (4232) [2022-11-03 02:22:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 24823 transitions. [2022-11-03 02:22:14,974 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 24823 transitions. Word has length 38 [2022-11-03 02:22:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:14,975 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 24823 transitions. [2022-11-03 02:22:14,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:14,976 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 24823 transitions. [2022-11-03 02:22:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:22:14,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:14,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 02:22:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:22:14,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash -162565216, now seen corresponding path program 1 times [2022-11-03 02:22:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:14,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458901661] [2022-11-03 02:22:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:15,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:15,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458901661] [2022-11-03 02:22:15,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458901661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:15,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:15,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:15,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934651121] [2022-11-03 02:22:15,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:15,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:15,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:15,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:15,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:15,352 INFO L87 Difference]: Start difference. First operand 15747 states and 24823 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:17,524 INFO L93 Difference]: Finished difference Result 47110 states and 74241 transitions. [2022-11-03 02:22:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-03 02:22:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:17,711 INFO L225 Difference]: With dead ends: 47110 [2022-11-03 02:22:17,712 INFO L226 Difference]: Without dead ends: 31364 [2022-11-03 02:22:17,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:17,830 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1579 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:17,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 3295 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:22:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31364 states. [2022-11-03 02:22:19,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31364 to 31347. [2022-11-03 02:22:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31347 states, 21321 states have (on average 1.5247877679283335) internal successors, (32510), 21457 states have internal predecessors, (32510), 8441 states have call successors, (8441), 1601 states have call predecessors, (8441), 1584 states have return successors, (8432), 8352 states have call predecessors, (8432), 8432 states have call successors, (8432) [2022-11-03 02:22:20,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31347 states to 31347 states and 49383 transitions. [2022-11-03 02:22:20,051 INFO L78 Accepts]: Start accepts. Automaton has 31347 states and 49383 transitions. Word has length 30 [2022-11-03 02:22:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:20,052 INFO L495 AbstractCegarLoop]: Abstraction has 31347 states and 49383 transitions. [2022-11-03 02:22:20,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 31347 states and 49383 transitions. [2022-11-03 02:22:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:22:20,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:20,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:20,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:22:20,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:20,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:20,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1561764982, now seen corresponding path program 1 times [2022-11-03 02:22:20,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:20,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519034151] [2022-11-03 02:22:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:20,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:20,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:20,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519034151] [2022-11-03 02:22:20,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519034151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:20,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:20,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:20,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041457703] [2022-11-03 02:22:20,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:20,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:20,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:20,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:20,429 INFO L87 Difference]: Start difference. First operand 31347 states and 49383 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:24,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:25,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:25,516 INFO L93 Difference]: Finished difference Result 93318 states and 146993 transitions. [2022-11-03 02:22:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:25,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-11-03 02:22:25,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:25,863 INFO L225 Difference]: With dead ends: 93318 [2022-11-03 02:22:25,863 INFO L226 Difference]: Without dead ends: 61972 [2022-11-03 02:22:26,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:26,308 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 1548 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:26,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 3376 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:22:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61972 states. [2022-11-03 02:22:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61972 to 61939. [2022-11-03 02:22:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61939 states, 42201 states have (on average 1.525603658681074) internal successors, (64382), 42465 states have internal predecessors, (64382), 16585 states have call successors, (16585), 3201 states have call predecessors, (16585), 3152 states have return successors, (16576), 16400 states have call predecessors, (16576), 16576 states have call successors, (16576) [2022-11-03 02:22:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61939 states to 61939 states and 97543 transitions. [2022-11-03 02:22:29,895 INFO L78 Accepts]: Start accepts. Automaton has 61939 states and 97543 transitions. Word has length 34 [2022-11-03 02:22:29,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:29,896 INFO L495 AbstractCegarLoop]: Abstraction has 61939 states and 97543 transitions. [2022-11-03 02:22:29,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:29,896 INFO L276 IsEmpty]: Start isEmpty. Operand 61939 states and 97543 transitions. [2022-11-03 02:22:29,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:22:29,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:29,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:29,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:22:29,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:29,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1438180659, now seen corresponding path program 1 times [2022-11-03 02:22:29,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:29,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631499219] [2022-11-03 02:22:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:29,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:30,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:30,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631499219] [2022-11-03 02:22:30,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631499219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:30,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:30,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695086048] [2022-11-03 02:22:30,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:30,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:30,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:30,427 INFO L87 Difference]: Start difference. First operand 61939 states and 97543 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:35,406 INFO L93 Difference]: Finished difference Result 184534 states and 290513 transitions. [2022-11-03 02:22:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:35,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-03 02:22:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:36,378 INFO L225 Difference]: With dead ends: 184534 [2022-11-03 02:22:36,378 INFO L226 Difference]: Without dead ends: 122596 [2022-11-03 02:22:36,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:36,809 INFO L413 NwaCegarLoop]: 1910 mSDtfsCounter, 1553 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:36,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3354 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:22:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122596 states. [2022-11-03 02:22:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122596 to 122579. [2022-11-03 02:22:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122579 states, 83625 states have (on average 1.5258355754857997) internal successors, (127598), 84145 states have internal predecessors, (127598), 32649 states have call successors, (32649), 6401 states have call predecessors, (32649), 6304 states have return successors, (32640), 32288 states have call predecessors, (32640), 32640 states have call successors, (32640) [2022-11-03 02:22:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122579 states to 122579 states and 192887 transitions. [2022-11-03 02:22:42,732 INFO L78 Accepts]: Start accepts. Automaton has 122579 states and 192887 transitions. Word has length 35 [2022-11-03 02:22:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 122579 states and 192887 transitions. [2022-11-03 02:22:42,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:22:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 122579 states and 192887 transitions. [2022-11-03 02:22:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 02:22:42,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:42,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:42,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:22:42,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:42,739 INFO L85 PathProgramCache]: Analyzing trace with hash -820018654, now seen corresponding path program 1 times [2022-11-03 02:22:42,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:42,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786911821] [2022-11-03 02:22:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:42,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:43,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:43,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786911821] [2022-11-03 02:22:43,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786911821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:43,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:43,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:43,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581333482] [2022-11-03 02:22:43,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:43,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:43,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:43,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:43,100 INFO L87 Difference]: Start difference. First operand 122579 states and 192887 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)