./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/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_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/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_e176a08c-e306-44be-bd92-ffa4e6c9d243/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 e997427d9ea56e1cd2f3b4f214f76f2cbd1227f5579082c63a7e80c81b2ac86e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:52:23,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:52:23,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:52:23,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:52:23,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:52:23,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:52:23,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:52:23,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:52:23,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:52:23,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:52:23,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:52:23,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:52:23,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:52:23,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:52:23,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:52:23,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:52:23,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:52:23,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:52:23,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:52:23,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:52:23,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:52:23,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:52:23,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:52:23,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:52:23,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:52:23,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:52:23,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:52:23,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:52:23,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:52:23,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:52:23,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:52:23,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:52:23,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:52:23,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:52:23,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:52:23,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:52:23,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:52:23,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:52:23,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:52:23,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:52:23,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:52:23,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:52:24,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:52:24,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:52:24,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:52:24,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:52:24,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:52:24,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:52:24,004 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:52:24,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:52:24,004 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:52:24,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:52:24,005 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:52:24,006 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:52:24,006 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:52:24,006 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:52:24,007 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:52:24,007 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:52:24,007 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:52:24,007 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:52:24,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:52:24,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:52:24,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:52:24,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:52:24,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:52:24,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:52:24,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:52:24,010 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:52:24,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:52:24,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:52:24,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:52:24,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:52:24,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:52:24,012 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:52:24,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:52:24,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:52:24,012 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:52:24,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:52:24,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:52:24,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:52:24,013 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_e176a08c-e306-44be-bd92-ffa4e6c9d243/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e997427d9ea56e1cd2f3b4f214f76f2cbd1227f5579082c63a7e80c81b2ac86e [2022-11-03 01:52:24,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:52:24,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:52:24,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:52:24,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:52:24,342 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:52:24,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i [2022-11-03 01:52:24,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/data/4cd66ac87/bfc7962d1d9645769d00d51c5dd7286c/FLAG10b94773d [2022-11-03 01:52:25,383 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:52:25,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i [2022-11-03 01:52:25,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/data/4cd66ac87/bfc7962d1d9645769d00d51c5dd7286c/FLAG10b94773d [2022-11-03 01:52:25,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/data/4cd66ac87/bfc7962d1d9645769d00d51c5dd7286c [2022-11-03 01:52:25,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:52:25,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:52:25,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:52:25,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:52:25,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:52:25,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:52:25" (1/1) ... [2022-11-03 01:52:25,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb5e17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:25, skipping insertion in model container [2022-11-03 01:52:25,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:52:25" (1/1) ... [2022-11-03 01:52:25,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:52:25,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:52:27,388 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_e176a08c-e306-44be-bd92-ffa4e6c9d243/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i[186321,186334] [2022-11-03 01:52:27,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:52:27,583 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:52:27,935 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_e176a08c-e306-44be-bd92-ffa4e6c9d243/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i[186321,186334] [2022-11-03 01:52:27,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:52:28,102 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:52:28,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28 WrapperNode [2022-11-03 01:52:28,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:52:28,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:52:28,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:52:28,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:52:28,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,343 INFO L138 Inliner]: procedures = 209, calls = 1207, calls flagged for inlining = 98, calls inlined = 94, statements flattened = 3386 [2022-11-03 01:52:28,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:52:28,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:52:28,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:52:28,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:52:28,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:52:28,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:52:28,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:52:28,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:52:28,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (1/1) ... [2022-11-03 01:52:28,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:52:28,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:28,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:52:28,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e176a08c-e306-44be-bd92-ffa4e6c9d243/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:52:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_select_profile [2022-11-03 01:52:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_select_profile [2022-11-03 01:52:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 01:52:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 01:52:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_common2_receive [2022-11-03 01:52:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_common2_receive [2022-11-03 01:52:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:52:28,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:52:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure hid_set_drvdata [2022-11-03 01:52:28,726 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_set_drvdata [2022-11-03 01:52:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:52:28,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:52:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_raw_event [2022-11-03 01:52:28,727 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_raw_event [2022-11-03 01:52:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure hid_hw_stop [2022-11-03 01:52:28,727 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_hw_stop [2022-11-03 01:52:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:52:28,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:52:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_report_event [2022-11-03 01:52:28,728 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_report_event [2022-11-03 01:52:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure hid_get_drvdata [2022-11-03 01:52:28,728 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_get_drvdata [2022-11-03 01:52:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:52:28,729 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:52:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:52:28,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:52:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:52:28,729 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:52:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:52:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:52:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_kovaplus_lock_of_kovaplus_device [2022-11-03 01:52:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_kovaplus_lock_of_kovaplus_device [2022-11-03 01:52:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_sysfs_write [2022-11-03 01:52:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_sysfs_write [2022-11-03 01:52:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:52:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_remove [2022-11-03 01:52:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_remove [2022-11-03 01:52:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:52:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_convert_event_cpi [2022-11-03 01:52:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_convert_event_cpi [2022-11-03 01:52:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:52:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:52:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:52:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:52:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 01:52:28,733 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 01:52:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:52:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_kovaplus_lock_of_kovaplus_device [2022-11-03 01:52:28,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_kovaplus_lock_of_kovaplus_device [2022-11-03 01:52:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:52:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_sysfs_read_profilex_settings [2022-11-03 01:52:28,736 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_sysfs_read_profilex_settings [2022-11-03 01:52:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_sysfs_read [2022-11-03 01:52:28,737 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_sysfs_read [2022-11-03 01:52:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_profile_activated [2022-11-03 01:52:28,737 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_profile_activated [2022-11-03 01:52:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:52:28,738 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:52:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-03 01:52:28,739 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-03 01:52:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:52:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:52:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:52:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:52:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:52:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:52:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:52:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure kovaplus_sysfs_read_profilex_buttons [2022-11-03 01:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure kovaplus_sysfs_read_profilex_buttons [2022-11-03 01:52:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_common2_send_with_status [2022-11-03 01:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_common2_send_with_status [2022-11-03 01:52:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:52:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 01:52:28,743 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 01:52:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:52:28,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:52:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:52:28,744 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:52:29,544 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:52:29,548 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:52:29,766 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:52:35,850 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:52:36,326 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:52:36,326 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:52:36,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:52:36 BoogieIcfgContainer [2022-11-03 01:52:36,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:52:36,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:52:36,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:52:36,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:52:36,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:52:25" (1/3) ... [2022-11-03 01:52:36,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efb7f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:52:36, skipping insertion in model container [2022-11-03 01:52:36,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:28" (2/3) ... [2022-11-03 01:52:36,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efb7f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:52:36, skipping insertion in model container [2022-11-03 01:52:36,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:52:36" (3/3) ... [2022-11-03 01:52:36,356 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-kovaplus.ko-entry_point.cil.out.i [2022-11-03 01:52:36,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:52:36,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:52:36,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:52:36,512 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;@3f25f14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:52:36,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:52:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 770 states, 485 states have (on average 1.4) internal successors, (679), 518 states have internal predecessors, (679), 250 states have call successors, (250), 34 states have call predecessors, (250), 33 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2022-11-03 01:52:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2022-11-03 01:52:36,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:36,594 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:36,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash -750167271, now seen corresponding path program 1 times [2022-11-03 01:52:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:36,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424786565] [2022-11-03 01:52:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 17510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17510 trivial. 0 not checked. [2022-11-03 01:52:40,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:40,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424786565] [2022-11-03 01:52:40,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424786565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:40,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:40,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:40,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189115491] [2022-11-03 01:52:40,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:40,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:40,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:40,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:40,544 INFO L87 Difference]: Start difference. First operand has 770 states, 485 states have (on average 1.4) internal successors, (679), 518 states have internal predecessors, (679), 250 states have call successors, (250), 34 states have call predecessors, (250), 33 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (107), 2 states have call predecessors, (107), 1 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2022-11-03 01:52:42,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:43,443 INFO L93 Difference]: Finished difference Result 1809 states and 2787 transitions. [2022-11-03 01:52:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (107), 2 states have call predecessors, (107), 1 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 938 [2022-11-03 01:52:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:43,485 INFO L225 Difference]: With dead ends: 1809 [2022-11-03 01:52:43,489 INFO L226 Difference]: Without dead ends: 1181 [2022-11-03 01:52:43,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:43,510 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 750 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:43,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 2178 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 01:52:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-03 01:52:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1177. [2022-11-03 01:52:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 808 states have (on average 1.3985148514851484) internal successors, (1130), 816 states have internal predecessors, (1130), 313 states have call successors, (313), 56 states have call predecessors, (313), 55 states have return successors, (307), 307 states have call predecessors, (307), 307 states have call successors, (307) [2022-11-03 01:52:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1750 transitions. [2022-11-03 01:52:43,664 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1750 transitions. Word has length 938 [2022-11-03 01:52:43,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:43,668 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1750 transitions. [2022-11-03 01:52:43,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (107), 2 states have call predecessors, (107), 1 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2022-11-03 01:52:43,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1750 transitions. [2022-11-03 01:52:43,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2022-11-03 01:52:43,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:43,809 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:43,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:52:43,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:43,811 INFO L85 PathProgramCache]: Analyzing trace with hash 789535269, now seen corresponding path program 1 times [2022-11-03 01:52:43,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:43,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046130923] [2022-11-03 01:52:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:43,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17512 trivial. 0 not checked. [2022-11-03 01:52:45,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:45,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046130923] [2022-11-03 01:52:45,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046130923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:45,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035909538] [2022-11-03 01:52:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:45,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:45,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:45,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:45,765 INFO L87 Difference]: Start difference. First operand 1177 states and 1750 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-03 01:52:47,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:48,481 INFO L93 Difference]: Finished difference Result 3068 states and 4557 transitions. [2022-11-03 01:52:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:48,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 948 [2022-11-03 01:52:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:48,502 INFO L225 Difference]: With dead ends: 3068 [2022-11-03 01:52:48,502 INFO L226 Difference]: Without dead ends: 2101 [2022-11-03 01:52:48,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:48,515 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 715 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:48,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2080 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:52:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2022-11-03 01:52:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2083. [2022-11-03 01:52:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1477 states have (on average 1.4285714285714286) internal successors, (2110), 1489 states have internal predecessors, (2110), 497 states have call successors, (497), 109 states have call predecessors, (497), 108 states have return successors, (491), 490 states have call predecessors, (491), 491 states have call successors, (491) [2022-11-03 01:52:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3098 transitions. [2022-11-03 01:52:48,690 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 3098 transitions. Word has length 948 [2022-11-03 01:52:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:48,693 INFO L495 AbstractCegarLoop]: Abstraction has 2083 states and 3098 transitions. [2022-11-03 01:52:48,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (111), 2 states have call predecessors, (111), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-03 01:52:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 3098 transitions. [2022-11-03 01:52:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2022-11-03 01:52:48,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:48,730 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:52:48,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash -168841636, now seen corresponding path program 1 times [2022-11-03 01:52:48,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:48,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096473584] [2022-11-03 01:52:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 17512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17512 trivial. 0 not checked. [2022-11-03 01:52:50,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096473584] [2022-11-03 01:52:50,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096473584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:50,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:50,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:50,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088226041] [2022-11-03 01:52:50,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:50,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:50,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:50,583 INFO L87 Difference]: Start difference. First operand 2083 states and 3098 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-03 01:52:52,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:53,447 INFO L93 Difference]: Finished difference Result 5759 states and 8554 transitions. [2022-11-03 01:52:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:53,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 953 [2022-11-03 01:52:53,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:53,478 INFO L225 Difference]: With dead ends: 5759 [2022-11-03 01:52:53,479 INFO L226 Difference]: Without dead ends: 3886 [2022-11-03 01:52:53,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:53,496 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 709 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:53,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2100 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:52:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2022-11-03 01:52:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3867. [2022-11-03 01:52:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3867 states, 2787 states have (on average 1.442411194833154) internal successors, (4020), 2807 states have internal predecessors, (4020), 865 states have call successors, (865), 215 states have call predecessors, (865), 214 states have return successors, (859), 856 states have call predecessors, (859), 859 states have call successors, (859) [2022-11-03 01:52:53,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3867 states to 3867 states and 5744 transitions. [2022-11-03 01:52:53,800 INFO L78 Accepts]: Start accepts. Automaton has 3867 states and 5744 transitions. Word has length 953 [2022-11-03 01:52:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:53,802 INFO L495 AbstractCegarLoop]: Abstraction has 3867 states and 5744 transitions. [2022-11-03 01:52:53,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-03 01:52:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3867 states and 5744 transitions. [2022-11-03 01:52:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2022-11-03 01:52:53,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:53,826 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:53,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:52:53,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1363138767, now seen corresponding path program 1 times [2022-11-03 01:52:53,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:53,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174330068] [2022-11-03 01:52:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17512 trivial. 0 not checked. [2022-11-03 01:52:55,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:55,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174330068] [2022-11-03 01:52:55,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174330068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:55,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:55,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:55,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133775097] [2022-11-03 01:52:55,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:55,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:55,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:55,718 INFO L87 Difference]: Start difference. First operand 3867 states and 5744 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-03 01:52:57,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:58,619 INFO L93 Difference]: Finished difference Result 11078 states and 16435 transitions. [2022-11-03 01:52:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:58,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 950 [2022-11-03 01:52:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:58,668 INFO L225 Difference]: With dead ends: 11078 [2022-11-03 01:52:58,669 INFO L226 Difference]: Without dead ends: 7421 [2022-11-03 01:52:58,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:58,687 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 724 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:58,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 2119 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:52:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7421 states. [2022-11-03 01:52:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7421 to 7403. [2022-11-03 01:52:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7403 states, 5375 states have (on average 1.4474418604651162) internal successors, (7780), 5411 states have internal predecessors, (7780), 1601 states have call successors, (1601), 427 states have call predecessors, (1601), 426 states have return successors, (1595), 1588 states have call predecessors, (1595), 1595 states have call successors, (1595) [2022-11-03 01:52:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7403 states to 7403 states and 10976 transitions. [2022-11-03 01:52:59,192 INFO L78 Accepts]: Start accepts. Automaton has 7403 states and 10976 transitions. Word has length 950 [2022-11-03 01:52:59,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:59,194 INFO L495 AbstractCegarLoop]: Abstraction has 7403 states and 10976 transitions. [2022-11-03 01:52:59,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-03 01:52:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 7403 states and 10976 transitions. [2022-11-03 01:52:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2022-11-03 01:52:59,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:59,209 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:52:59,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1358602817, now seen corresponding path program 1 times [2022-11-03 01:52:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:59,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578434970] [2022-11-03 01:52:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:59,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17554 trivial. 0 not checked. [2022-11-03 01:53:00,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:00,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578434970] [2022-11-03 01:53:00,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578434970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:00,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:00,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477669901] [2022-11-03 01:53:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:00,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:00,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:00,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:00,922 INFO L87 Difference]: Start difference. First operand 7403 states and 10976 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 01:53:02,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:03,551 INFO L93 Difference]: Finished difference Result 7405 states and 10977 transitions. [2022-11-03 01:53:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:03,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 953 [2022-11-03 01:53:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:03,604 INFO L225 Difference]: With dead ends: 7405 [2022-11-03 01:53:03,604 INFO L226 Difference]: Without dead ends: 7402 [2022-11-03 01:53:03,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:03,611 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 842 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:03,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 981 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 01:53:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7402 states. [2022-11-03 01:53:04,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7402 to 7402. [2022-11-03 01:53:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7402 states, 5375 states have (on average 1.4472558139534883) internal successors, (7779), 5410 states have internal predecessors, (7779), 1600 states have call successors, (1600), 427 states have call predecessors, (1600), 426 states have return successors, (1595), 1588 states have call predecessors, (1595), 1595 states have call successors, (1595) [2022-11-03 01:53:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 10974 transitions. [2022-11-03 01:53:04,231 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 10974 transitions. Word has length 953 [2022-11-03 01:53:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:04,233 INFO L495 AbstractCegarLoop]: Abstraction has 7402 states and 10974 transitions. [2022-11-03 01:53:04,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 01:53:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 10974 transitions. [2022-11-03 01:53:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2022-11-03 01:53:04,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:04,248 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:04,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:53:04,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash -833359020, now seen corresponding path program 1 times [2022-11-03 01:53:04,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:04,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691088761] [2022-11-03 01:53:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 17554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17554 trivial. 0 not checked. [2022-11-03 01:53:06,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:06,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691088761] [2022-11-03 01:53:06,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691088761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:06,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:06,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:06,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514244320] [2022-11-03 01:53:06,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:06,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:06,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:06,017 INFO L87 Difference]: Start difference. First operand 7402 states and 10974 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 01:53:08,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:08,988 INFO L93 Difference]: Finished difference Result 7502 states and 11024 transitions. [2022-11-03 01:53:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 954 [2022-11-03 01:53:08,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:09,054 INFO L225 Difference]: With dead ends: 7502 [2022-11-03 01:53:09,055 INFO L226 Difference]: Without dead ends: 7498 [2022-11-03 01:53:09,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:09,061 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 788 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:09,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1019 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 01:53:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7498 states. [2022-11-03 01:53:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7498 to 7496. [2022-11-03 01:53:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 5423 states have (on average 1.4401622718052738) internal successors, (7810), 5456 states have internal predecessors, (7810), 1598 states have call successors, (1598), 475 states have call predecessors, (1598), 474 states have return successors, (1595), 1588 states have call predecessors, (1595), 1595 states have call successors, (1595) [2022-11-03 01:53:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 11003 transitions. [2022-11-03 01:53:09,798 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 11003 transitions. Word has length 954 [2022-11-03 01:53:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:09,800 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 11003 transitions. [2022-11-03 01:53:09,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 01:53:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 11003 transitions. [2022-11-03 01:53:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2022-11-03 01:53:09,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:09,815 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:09,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:53:09,816 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:09,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash -64694364, now seen corresponding path program 1 times [2022-11-03 01:53:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:09,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027472794] [2022-11-03 01:53:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 17554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17554 trivial. 0 not checked. [2022-11-03 01:53:11,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:11,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027472794] [2022-11-03 01:53:11,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027472794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:11,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:11,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:11,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967394369] [2022-11-03 01:53:11,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:11,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:11,496 INFO L87 Difference]: Start difference. First operand 7496 states and 11003 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 01:53:13,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:14,017 INFO L93 Difference]: Finished difference Result 7498 states and 11004 transitions. [2022-11-03 01:53:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:14,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 955 [2022-11-03 01:53:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:14,057 INFO L225 Difference]: With dead ends: 7498 [2022-11-03 01:53:14,057 INFO L226 Difference]: Without dead ends: 7495 [2022-11-03 01:53:14,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:14,063 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 834 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:14,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 975 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 01:53:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2022-11-03 01:53:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 7495. [2022-11-03 01:53:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 5423 states have (on average 1.4399778720265535) internal successors, (7809), 5455 states have internal predecessors, (7809), 1597 states have call successors, (1597), 475 states have call predecessors, (1597), 474 states have return successors, (1595), 1588 states have call predecessors, (1595), 1595 states have call successors, (1595) [2022-11-03 01:53:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 11001 transitions. [2022-11-03 01:53:14,529 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 11001 transitions. Word has length 955 [2022-11-03 01:53:14,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:14,530 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 11001 transitions. [2022-11-03 01:53:14,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 01:53:14,531 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 11001 transitions. [2022-11-03 01:53:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-11-03 01:53:14,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:14,542 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:14,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:53:14,543 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:14,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2005888937, now seen corresponding path program 1 times [2022-11-03 01:53:14,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:14,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730180978] [2022-11-03 01:53:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:14,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 17554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17554 trivial. 0 not checked. [2022-11-03 01:53:16,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730180978] [2022-11-03 01:53:16,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730180978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:16,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:16,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116561608] [2022-11-03 01:53:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:16,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:16,211 INFO L87 Difference]: Start difference. First operand 7495 states and 11001 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 01:53:18,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:18,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:18,997 INFO L93 Difference]: Finished difference Result 7497 states and 11002 transitions. [2022-11-03 01:53:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:18,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 956 [2022-11-03 01:53:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:19,036 INFO L225 Difference]: With dead ends: 7497 [2022-11-03 01:53:19,037 INFO L226 Difference]: Without dead ends: 7485 [2022-11-03 01:53:19,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:19,043 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 831 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:19,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 974 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 01:53:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7485 states. [2022-11-03 01:53:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7485 to 7485. [2022-11-03 01:53:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7485 states, 5416 states have (on average 1.437407680945347) internal successors, (7785), 5447 states have internal predecessors, (7785), 1595 states have call successors, (1595), 474 states have call predecessors, (1595), 473 states have return successors, (1594), 1587 states have call predecessors, (1594), 1594 states have call successors, (1594) [2022-11-03 01:53:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 10974 transitions. [2022-11-03 01:53:19,576 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 10974 transitions. Word has length 956 [2022-11-03 01:53:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:19,578 INFO L495 AbstractCegarLoop]: Abstraction has 7485 states and 10974 transitions. [2022-11-03 01:53:19,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2022-11-03 01:53:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 10974 transitions. [2022-11-03 01:53:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2022-11-03 01:53:19,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:19,604 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:19,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:53:19,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1288401788, now seen corresponding path program 1 times [2022-11-03 01:53:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:19,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756955781] [2022-11-03 01:53:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 17514 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17514 trivial. 0 not checked. [2022-11-03 01:53:21,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:21,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756955781] [2022-11-03 01:53:21,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756955781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:21,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:21,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020484915] [2022-11-03 01:53:21,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:21,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:21,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:21,117 INFO L87 Difference]: Start difference. First operand 7485 states and 10974 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 01:53:23,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:24,587 INFO L93 Difference]: Finished difference Result 21871 states and 32033 transitions. [2022-11-03 01:53:24,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:24,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 980 [2022-11-03 01:53:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:24,663 INFO L225 Difference]: With dead ends: 21871 [2022-11-03 01:53:24,663 INFO L226 Difference]: Without dead ends: 14596 [2022-11-03 01:53:24,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:24,694 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 695 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:24,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 2093 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:53:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14596 states. [2022-11-03 01:53:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14596 to 14589. [2022-11-03 01:53:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14589 states, 10592 states have (on average 1.4396714501510575) internal successors, (15249), 10655 states have internal predecessors, (15249), 3051 states have call successors, (3051), 946 states have call predecessors, (3051), 945 states have return successors, (3050), 3035 states have call predecessors, (3050), 3050 states have call successors, (3050) [2022-11-03 01:53:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14589 states to 14589 states and 21350 transitions. [2022-11-03 01:53:26,127 INFO L78 Accepts]: Start accepts. Automaton has 14589 states and 21350 transitions. Word has length 980 [2022-11-03 01:53:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:26,133 INFO L495 AbstractCegarLoop]: Abstraction has 14589 states and 21350 transitions. [2022-11-03 01:53:26,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 01:53:26,134 INFO L276 IsEmpty]: Start isEmpty. Operand 14589 states and 21350 transitions. [2022-11-03 01:53:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2022-11-03 01:53:26,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:26,148 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:26,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:53:26,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:26,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:26,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1972845482, now seen corresponding path program 1 times [2022-11-03 01:53:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:26,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615578515] [2022-11-03 01:53:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 17514 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17514 trivial. 0 not checked. [2022-11-03 01:53:27,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:27,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615578515] [2022-11-03 01:53:27,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615578515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:27,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:27,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:27,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803790928] [2022-11-03 01:53:27,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:27,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:27,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:27,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:27,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:27,710 INFO L87 Difference]: Start difference. First operand 14589 states and 21350 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 01:53:29,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:31,709 INFO L93 Difference]: Finished difference Result 43090 states and 63007 transitions. [2022-11-03 01:53:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:31,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 974 [2022-11-03 01:53:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:31,851 INFO L225 Difference]: With dead ends: 43090 [2022-11-03 01:53:31,851 INFO L226 Difference]: Without dead ends: 28711 [2022-11-03 01:53:31,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:31,899 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 722 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:31,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 2111 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:53:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28711 states. [2022-11-03 01:53:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28711 to 28707. [2022-11-03 01:53:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28707 states, 20851 states have (on average 1.4389717519543428) internal successors, (30004), 20978 states have internal predecessors, (30004), 5966 states have call successors, (5966), 1890 states have call predecessors, (5966), 1889 states have return successors, (5965), 5934 states have call predecessors, (5965), 5965 states have call successors, (5965) [2022-11-03 01:53:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28707 states to 28707 states and 41935 transitions. [2022-11-03 01:53:34,428 INFO L78 Accepts]: Start accepts. Automaton has 28707 states and 41935 transitions. Word has length 974 [2022-11-03 01:53:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:34,430 INFO L495 AbstractCegarLoop]: Abstraction has 28707 states and 41935 transitions. [2022-11-03 01:53:34,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 01:53:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 28707 states and 41935 transitions. [2022-11-03 01:53:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2022-11-03 01:53:34,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:34,452 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:53:34,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1049817140, now seen corresponding path program 1 times [2022-11-03 01:53:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:34,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071180656] [2022-11-03 01:53:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17514 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17514 trivial. 0 not checked. [2022-11-03 01:53:36,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:36,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071180656] [2022-11-03 01:53:36,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071180656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:36,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:36,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:36,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047787106] [2022-11-03 01:53:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:36,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:36,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:36,299 INFO L87 Difference]: Start difference. First operand 28707 states and 41935 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 01:53:38,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:41,549 INFO L93 Difference]: Finished difference Result 85188 states and 124346 transitions. [2022-11-03 01:53:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 973 [2022-11-03 01:53:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:41,846 INFO L225 Difference]: With dead ends: 85188 [2022-11-03 01:53:41,846 INFO L226 Difference]: Without dead ends: 56691 [2022-11-03 01:53:41,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:41,956 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 723 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:41,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 2121 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:53:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56691 states. [2022-11-03 01:53:45,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56691 to 56687. [2022-11-03 01:53:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56687 states, 41145 states have (on average 1.4371126503827925) internal successors, (59130), 41400 states have internal predecessors, (59130), 11764 states have call successors, (11764), 3778 states have call predecessors, (11764), 3777 states have return successors, (11763), 11700 states have call predecessors, (11763), 11763 states have call successors, (11763) [2022-11-03 01:53:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56687 states to 56687 states and 82657 transitions. [2022-11-03 01:53:45,920 INFO L78 Accepts]: Start accepts. Automaton has 56687 states and 82657 transitions. Word has length 973 [2022-11-03 01:53:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:45,922 INFO L495 AbstractCegarLoop]: Abstraction has 56687 states and 82657 transitions. [2022-11-03 01:53:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 01:53:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 56687 states and 82657 transitions. [2022-11-03 01:53:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2022-11-03 01:53:45,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:45,937 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:45,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:53:45,937 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:45,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1067296502, now seen corresponding path program 1 times [2022-11-03 01:53:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:45,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489691060] [2022-11-03 01:53:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 17512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17512 trivial. 0 not checked. [2022-11-03 01:53:47,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:47,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489691060] [2022-11-03 01:53:47,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489691060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:47,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:47,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77258007] [2022-11-03 01:53:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:47,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:47,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:47,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:47,469 INFO L87 Difference]: Start difference. First operand 56687 states and 82657 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 01:53:49,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:56,461 INFO L93 Difference]: Finished difference Result 164303 states and 239371 transitions. [2022-11-03 01:53:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:56,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 970 [2022-11-03 01:53:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:56,957 INFO L225 Difference]: With dead ends: 164303 [2022-11-03 01:53:56,958 INFO L226 Difference]: Without dead ends: 107826 [2022-11-03 01:53:57,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:57,330 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 644 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:57,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 2109 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:53:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107826 states. [2022-11-03 01:54:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107826 to 107759. [2022-11-03 01:54:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107759 states, 79033 states have (on average 1.442157073627472) internal successors, (113978), 79544 states have internal predecessors, (113978), 21428 states have call successors, (21428), 7298 states have call predecessors, (21428), 7297 states have return successors, (21427), 21300 states have call predecessors, (21427), 21427 states have call successors, (21427) [2022-11-03 01:54:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107759 states to 107759 states and 156833 transitions. [2022-11-03 01:54:05,264 INFO L78 Accepts]: Start accepts. Automaton has 107759 states and 156833 transitions. Word has length 970 [2022-11-03 01:54:05,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:05,266 INFO L495 AbstractCegarLoop]: Abstraction has 107759 states and 156833 transitions. [2022-11-03 01:54:05,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 01:54:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 107759 states and 156833 transitions. [2022-11-03 01:54:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2022-11-03 01:54:05,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:05,290 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 36, 36, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:05,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:54:05,291 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash -554482887, now seen corresponding path program 1 times [2022-11-03 01:54:05,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:05,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026247720] [2022-11-03 01:54:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:05,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat