./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--net--wireless--ti--wl12xx--wl12xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/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_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ti--wl12xx--wl12xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/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_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/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 1e656e08f859c02a2fcbde115f6fa3d541385535606558c0d455741014c679db --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:15:35,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:15:35,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:15:35,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:15:35,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:15:35,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:15:35,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:15:35,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:15:35,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:15:35,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:15:35,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:15:35,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:15:35,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:15:35,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:15:35,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:15:35,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:15:35,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:15:35,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:15:35,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:15:35,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:15:35,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:15:35,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:15:35,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:15:35,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:15:35,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:15:35,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:15:35,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:15:35,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:15:35,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:15:35,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:15:35,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:15:35,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:15:35,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:15:35,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:15:35,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:15:35,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:15:35,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:15:35,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:15:35,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:15:35,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:15:35,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:15:35,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:15:35,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:15:35,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:15:35,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:15:35,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:15:35,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:15:35,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:15:35,996 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:15:35,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:15:35,997 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:15:35,997 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:15:35,998 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:15:35,998 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:15:35,998 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:15:35,998 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:15:35,999 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:15:35,999 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:15:35,999 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:15:36,000 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:15:36,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:15:36,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:15:36,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:15:36,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:15:36,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:15:36,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:15:36,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:15:36,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:15:36,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:15:36,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:15:36,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:15:36,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:15:36,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:15:36,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:15:36,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:15:36,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:15:36,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:15:36,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:15:36,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:15:36,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:15:36,023 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_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e656e08f859c02a2fcbde115f6fa3d541385535606558c0d455741014c679db [2022-11-03 02:15:36,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:15:36,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:15:36,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:15:36,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:15:36,433 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:15:36,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ti--wl12xx--wl12xx.ko-entry_point.cil.out.i [2022-11-03 02:15:36,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/data/c6fd9e052/c588089ecff7418ca01393be79f0d205/FLAG8ef3b3154 [2022-11-03 02:15:38,089 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:15:38,091 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ti--wl12xx--wl12xx.ko-entry_point.cil.out.i [2022-11-03 02:15:38,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/data/c6fd9e052/c588089ecff7418ca01393be79f0d205/FLAG8ef3b3154 [2022-11-03 02:15:38,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/data/c6fd9e052/c588089ecff7418ca01393be79f0d205 [2022-11-03 02:15:38,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:15:38,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:15:38,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:15:38,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:15:38,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:15:38,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:15:38" (1/1) ... [2022-11-03 02:15:38,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb0bca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:38, skipping insertion in model container [2022-11-03 02:15:38,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:15:38" (1/1) ... [2022-11-03 02:15:38,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:15:38,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:15:46,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ti--wl12xx--wl12xx.ko-entry_point.cil.out.i[602654,602667] [2022-11-03 02:15:47,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:47,544 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:15:48,504 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_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ti--wl12xx--wl12xx.ko-entry_point.cil.out.i[602654,602667] [2022-11-03 02:15:48,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:49,307 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:15:49,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49 WrapperNode [2022-11-03 02:15:49,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:15:49,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:15:49,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:15:49,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:15:49,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:49,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:50,273 INFO L138 Inliner]: procedures = 616, calls = 8387, calls flagged for inlining = 398, calls inlined = 395, statements flattened = 18906 [2022-11-03 02:15:50,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:15:50,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:15:50,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:15:50,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:15:50,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:50,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:50,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:50,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:51,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:51,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:51,412 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:51,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:51,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:15:51,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:15:51,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:15:51,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:15:51,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:51,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:15:51,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:15:51,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:15:51,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:15:51,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_80 [2022-11-03 02:15:51,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_80 [2022-11-03 02:15:51,707 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_disable_interrupts [2022-11-03 02:15:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_disable_interrupts [2022-11-03 02:15:51,708 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_debugfs_add_files [2022-11-03 02:15:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_debugfs_add_files [2022-11-03 02:15:51,709 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_cmd_channel_switch [2022-11-03 02:15:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_cmd_channel_switch [2022-11-03 02:15:51,709 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_write_reg [2022-11-03 02:15:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_write_reg [2022-11-03 02:15:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_hw_init [2022-11-03 02:15:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_hw_init [2022-11-03 02:15:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:15:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:15:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 02:15:51,711 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 02:15:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:15:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:15:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_calc_tx_blocks [2022-11-03 02:15:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_calc_tx_blocks [2022-11-03 02:15:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-03 02:15:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-03 02:15:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_trigger_cmd [2022-11-03 02:15:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_trigger_cmd [2022-11-03 02:15:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_wl1271 [2022-11-03 02:15:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_wl1271 [2022-11-03 02:15:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_debugfs_update_stats [2022-11-03 02:15:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_debugfs_update_stats [2022-11-03 02:15:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure generic_file_llseek [2022-11-03 02:15:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_file_llseek [2022-11-03 02:15:51,717 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_sta_get_ap_rate_mask [2022-11-03 02:15:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_sta_get_ap_rate_mask [2022-11-03 02:15:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_set_tx_desc_data_len [2022-11-03 02:15:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_set_tx_desc_data_len [2022-11-03 02:15:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_convert_fw_status [2022-11-03 02:15:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_convert_fw_status [2022-11-03 02:15:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_top_reg_write [2022-11-03 02:15:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_top_reg_write [2022-11-03 02:15:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_cmd_send [2022-11-03 02:15:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_cmd_send [2022-11-03 02:15:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:15:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:15:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:15:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-03 02:15:51,722 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-03 02:15:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:15:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:15:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2022-11-03 02:15:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2022-11-03 02:15:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_identify_chip [2022-11-03 02:15:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_identify_chip [2022-11-03 02:15:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:15:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_tx_min_rate_get [2022-11-03 02:15:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_tx_min_rate_get [2022-11-03 02:15:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_remove [2022-11-03 02:15:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_remove [2022-11-03 02:15:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:15:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_set_peer_cap [2022-11-03 02:15:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_set_peer_cap [2022-11-03 02:15:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:15:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:15:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:15:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_wait_for_event [2022-11-03 02:15:51,731 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_wait_for_event [2022-11-03 02:15:51,731 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-11-03 02:15:51,732 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-11-03 02:15:51,732 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_set_min_fw_ver [2022-11-03 02:15:51,732 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_set_min_fw_ver [2022-11-03 02:15:51,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:15:51,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:15:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:15:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:15:51,733 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_cmd_build_probe_req [2022-11-03 02:15:51,734 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_cmd_build_probe_req [2022-11-03 02:15:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:15:51,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:15:51,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:15:51,735 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:15:51,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:15:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_lnk_low_prio [2022-11-03 02:15:51,736 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_lnk_low_prio [2022-11-03 02:15:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:15:51,737 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:15:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_set_partition [2022-11-03 02:15:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_set_partition [2022-11-03 02:15:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_top_reg_read [2022-11-03 02:15:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_top_reg_read [2022-11-03 02:15:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_get_rx_packet_len [2022-11-03 02:15:51,740 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_get_rx_packet_len [2022-11-03 02:15:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_scan_stop [2022-11-03 02:15:51,740 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_scan_stop [2022-11-03 02:15:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:15:51,742 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:15:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:15:51,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:15:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:15:51,743 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:15:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:15:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_probe [2022-11-03 02:15:51,744 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_probe [2022-11-03 02:15:51,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:15:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:15:51,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:15:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_boot [2022-11-03 02:15:51,746 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_boot [2022-11-03 02:15:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure wl128x_switch_tcxo_to_fref [2022-11-03 02:15:51,746 INFO L138 BoogieDeclarations]: Found implementation of procedure wl128x_switch_tcxo_to_fref [2022-11-03 02:15:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_process_mailbox_events [2022-11-03 02:15:51,747 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_process_mailbox_events [2022-11-03 02:15:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_translate_addr [2022-11-03 02:15:51,749 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_translate_addr [2022-11-03 02:15:51,752 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_raw_read32 [2022-11-03 02:15:51,753 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_raw_read32 [2022-11-03 02:15:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_raw_write [2022-11-03 02:15:51,753 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_raw_write [2022-11-03 02:15:51,755 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:15:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:15:51,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:15:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:15:51,758 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_scan_send [2022-11-03 02:15:51,763 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_scan_send [2022-11-03 02:15:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_get_pg_ver [2022-11-03 02:15:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_get_pg_ver [2022-11-03 02:15:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_raw_write32 [2022-11-03 02:15:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_raw_write32 [2022-11-03 02:15:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_scan_stm [2022-11-03 02:15:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_scan_stm [2022-11-03 02:15:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:15:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:15:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:15:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:15:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:15:51,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:15:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_set_tx_desc_blocks [2022-11-03 02:15:51,766 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_set_tx_desc_blocks [2022-11-03 02:15:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_set_tx_desc_csum [2022-11-03 02:15:51,767 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_set_tx_desc_csum [2022-11-03 02:15:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_set_key [2022-11-03 02:15:51,767 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_set_key [2022-11-03 02:15:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_set_ht_cap [2022-11-03 02:15:51,768 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_set_ht_cap [2022-11-03 02:15:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:15:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_get_rx_buf_align [2022-11-03 02:15:51,768 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_get_rx_buf_align [2022-11-03 02:15:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:15:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_lnk_high_prio [2022-11-03 02:15:51,770 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_lnk_high_prio [2022-11-03 02:15:51,770 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_get_clock_idx [2022-11-03 02:15:51,770 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_get_clock_idx [2022-11-03 02:15:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:15:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:15:51,771 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:15:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_read32 [2022-11-03 02:15:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_read32 [2022-11-03 02:15:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_write32 [2022-11-03 02:15:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_write32 [2022-11-03 02:15:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:15:51,773 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:15:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:15:51,773 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:15:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-03 02:15:51,773 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-03 02:15:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~~bool~0~TO~int [2022-11-03 02:15:51,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~~bool~0~TO~int [2022-11-03 02:15:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:15:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:15:51,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:15:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_calc_packet_alignment [2022-11-03 02:15:51,775 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_calc_packet_alignment [2022-11-03 02:15:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_scan_start [2022-11-03 02:15:51,775 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_scan_start [2022-11-03 02:15:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_wl1271 [2022-11-03 02:15:51,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_wl1271 [2022-11-03 02:15:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:15:51,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:15:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_get_mac [2022-11-03 02:15:51,777 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_get_mac [2022-11-03 02:15:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_setup [2022-11-03 02:15:51,777 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_setup [2022-11-03 02:15:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_scan_sched_scan_stop [2022-11-03 02:15:51,778 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_scan_sched_scan_stop [2022-11-03 02:15:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:15:51,778 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:15:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_plt_init [2022-11-03 02:15:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_plt_init [2022-11-03 02:15:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure wlcore_write [2022-11-03 02:15:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure wlcore_write [2022-11-03 02:15:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 02:15:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 02:15:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_tx_delayed_compl [2022-11-03 02:15:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_tx_delayed_compl [2022-11-03 02:15:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_cmd_test [2022-11-03 02:15:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_cmd_test [2022-11-03 02:15:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2022-11-03 02:15:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2022-11-03 02:15:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_ack_event [2022-11-03 02:15:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_ack_event [2022-11-03 02:15:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:15:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_convert_hwaddr [2022-11-03 02:15:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_convert_hwaddr [2022-11-03 02:15:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_get_spare_blocks [2022-11-03 02:15:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_get_spare_blocks [2022-11-03 02:15:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_sched_scan_start [2022-11-03 02:15:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_sched_scan_start [2022-11-03 02:15:54,591 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:15:54,601 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:15:56,887 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:18:32,817 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:18:36,517 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:18:36,517 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:18:36,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:36 BoogieIcfgContainer [2022-11-03 02:18:36,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:18:36,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:18:36,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:18:36,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:18:36,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:15:38" (1/3) ... [2022-11-03 02:18:36,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c16894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:36, skipping insertion in model container [2022-11-03 02:18:36,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49" (2/3) ... [2022-11-03 02:18:36,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c16894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:36, skipping insertion in model container [2022-11-03 02:18:36,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:36" (3/3) ... [2022-11-03 02:18:36,542 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ti--wl12xx--wl12xx.ko-entry_point.cil.out.i [2022-11-03 02:18:36,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:18:36,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:18:36,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:18:36,766 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;@59864409, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:18:36,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:18:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 4550 states, 3000 states have (on average 1.4406666666666668) internal successors, (4322), 3106 states have internal predecessors, (4322), 1455 states have call successors, (1455), 94 states have call predecessors, (1455), 93 states have return successors, (1373), 1368 states have call predecessors, (1373), 1373 states have call successors, (1373) [2022-11-03 02:18:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-03 02:18:36,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:36,877 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:36,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:36,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1651342248, now seen corresponding path program 1 times [2022-11-03 02:18:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958072538] [2022-11-03 02:18:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:36,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2012 trivial. 0 not checked. [2022-11-03 02:18:40,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:40,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958072538] [2022-11-03 02:18:40,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958072538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:40,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:40,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155890567] [2022-11-03 02:18:40,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:40,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:40,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:40,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:40,362 INFO L87 Difference]: Start difference. First operand has 4550 states, 3000 states have (on average 1.4406666666666668) internal successors, (4322), 3106 states have internal predecessors, (4322), 1455 states have call successors, (1455), 94 states have call predecessors, (1455), 93 states have return successors, (1373), 1368 states have call predecessors, (1373), 1373 states have call successors, (1373) Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:18:42,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:46,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:47,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:49,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:53,942 INFO L93 Difference]: Finished difference Result 12450 states and 19583 transitions. [2022-11-03 02:18:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 408 [2022-11-03 02:18:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:54,027 INFO L225 Difference]: With dead ends: 12450 [2022-11-03 02:18:54,027 INFO L226 Difference]: Without dead ends: 7796 [2022-11-03 02:18:54,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:54,062 INFO L413 NwaCegarLoop]: 8024 mSDtfsCounter, 5345 mSDsluCounter, 6846 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5346 SdHoareTripleChecker+Valid, 14288 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:54,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5346 Valid, 14288 Invalid, 1550 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1545 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-11-03 02:18:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7796 states. [2022-11-03 02:18:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7796 to 7777. [2022-11-03 02:18:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7777 states, 5244 states have (on average 1.408085430968726) internal successors, (7384), 5284 states have internal predecessors, (7384), 2380 states have call successors, (2380), 154 states have call predecessors, (2380), 152 states have return successors, (2385), 2360 states have call predecessors, (2385), 2374 states have call successors, (2385) [2022-11-03 02:18:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 12149 transitions. [2022-11-03 02:18:55,250 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 12149 transitions. Word has length 408 [2022-11-03 02:18:55,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:55,253 INFO L495 AbstractCegarLoop]: Abstraction has 7777 states and 12149 transitions. [2022-11-03 02:18:55,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:18:55,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 12149 transitions. [2022-11-03 02:18:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-03 02:18:55,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:55,279 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:55,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:18:55,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:55,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:55,284 INFO L85 PathProgramCache]: Analyzing trace with hash -156906618, now seen corresponding path program 1 times [2022-11-03 02:18:55,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:55,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007596813] [2022-11-03 02:18:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:55,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2022-11-03 02:18:58,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:58,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007596813] [2022-11-03 02:18:58,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007596813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:58,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:58,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:58,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889369719] [2022-11-03 02:18:58,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:58,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:58,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:58,598 INFO L87 Difference]: Start difference. First operand 7777 states and 12149 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-03 02:19:01,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:03,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:06,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:09,874 INFO L93 Difference]: Finished difference Result 22529 states and 35250 transitions. [2022-11-03 02:19:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:09,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 407 [2022-11-03 02:19:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:09,983 INFO L225 Difference]: With dead ends: 22529 [2022-11-03 02:19:09,984 INFO L226 Difference]: Without dead ends: 14817 [2022-11-03 02:19:10,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:10,027 INFO L413 NwaCegarLoop]: 7569 mSDtfsCounter, 6278 mSDsluCounter, 6959 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6283 SdHoareTripleChecker+Valid, 13946 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:10,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6283 Valid, 13946 Invalid, 1188 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1182 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:19:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14817 states. [2022-11-03 02:19:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14817 to 14811. [2022-11-03 02:19:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14811 states, 10110 states have (on average 1.421463897131553) internal successors, (14371), 10185 states have internal predecessors, (14371), 4400 states have call successors, (4400), 303 states have call predecessors, (4400), 300 states have return successors, (4416), 4366 states have call predecessors, (4416), 4394 states have call successors, (4416) [2022-11-03 02:19:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14811 states to 14811 states and 23187 transitions. [2022-11-03 02:19:11,520 INFO L78 Accepts]: Start accepts. Automaton has 14811 states and 23187 transitions. Word has length 407 [2022-11-03 02:19:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:11,528 INFO L495 AbstractCegarLoop]: Abstraction has 14811 states and 23187 transitions. [2022-11-03 02:19:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-03 02:19:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 14811 states and 23187 transitions. [2022-11-03 02:19:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-03 02:19:11,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:11,548 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:11,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:19:11,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:11,560 INFO L85 PathProgramCache]: Analyzing trace with hash -141035601, now seen corresponding path program 1 times [2022-11-03 02:19:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:11,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511419568] [2022-11-03 02:19:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:11,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2152 trivial. 0 not checked. [2022-11-03 02:19:13,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:13,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511419568] [2022-11-03 02:19:13,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511419568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:13,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:13,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170936033] [2022-11-03 02:19:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:13,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:13,919 INFO L87 Difference]: Start difference. First operand 14811 states and 23187 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:19:16,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:19,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:21,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:22,898 INFO L93 Difference]: Finished difference Result 14837 states and 23214 transitions. [2022-11-03 02:19:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:22,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 421 [2022-11-03 02:19:22,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:22,993 INFO L225 Difference]: With dead ends: 14837 [2022-11-03 02:19:22,994 INFO L226 Difference]: Without dead ends: 14834 [2022-11-03 02:19:23,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:23,007 INFO L413 NwaCegarLoop]: 6394 mSDtfsCounter, 6787 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6792 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:23,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6792 Valid, 6448 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 600 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:19:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14834 states. [2022-11-03 02:19:24,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14834 to 14834. [2022-11-03 02:19:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14834 states, 10123 states have (on average 1.4211202212782772) internal successors, (14386), 10197 states have internal predecessors, (14386), 4404 states have call successors, (4404), 309 states have call predecessors, (4404), 306 states have return successors, (4421), 4371 states have call predecessors, (4421), 4399 states have call successors, (4421) [2022-11-03 02:19:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14834 states to 14834 states and 23211 transitions. [2022-11-03 02:19:24,468 INFO L78 Accepts]: Start accepts. Automaton has 14834 states and 23211 transitions. Word has length 421 [2022-11-03 02:19:24,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:24,469 INFO L495 AbstractCegarLoop]: Abstraction has 14834 states and 23211 transitions. [2022-11-03 02:19:24,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:19:24,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14834 states and 23211 transitions. [2022-11-03 02:19:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-03 02:19:24,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:24,491 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:19:24,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:24,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:24,493 INFO L85 PathProgramCache]: Analyzing trace with hash -79611922, now seen corresponding path program 1 times [2022-11-03 02:19:24,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:24,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777478187] [2022-11-03 02:19:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2152 trivial. 0 not checked. [2022-11-03 02:19:26,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:26,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777478187] [2022-11-03 02:19:26,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777478187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:26,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:26,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:26,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556147397] [2022-11-03 02:19:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:26,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:26,743 INFO L87 Difference]: Start difference. First operand 14834 states and 23211 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:19:29,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:31,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:34,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:35,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:35,656 INFO L93 Difference]: Finished difference Result 14836 states and 23212 transitions. [2022-11-03 02:19:35,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:35,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 422 [2022-11-03 02:19:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:35,735 INFO L225 Difference]: With dead ends: 14836 [2022-11-03 02:19:35,735 INFO L226 Difference]: Without dead ends: 14833 [2022-11-03 02:19:35,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:35,746 INFO L413 NwaCegarLoop]: 6392 mSDtfsCounter, 6784 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6789 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:35,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6789 Valid, 6446 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 600 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 02:19:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14833 states. [2022-11-03 02:19:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14833 to 14833. [2022-11-03 02:19:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14833 states, 10123 states have (on average 1.4210214363331028) internal successors, (14385), 10196 states have internal predecessors, (14385), 4403 states have call successors, (4403), 309 states have call predecessors, (4403), 306 states have return successors, (4421), 4371 states have call predecessors, (4421), 4399 states have call successors, (4421) [2022-11-03 02:19:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14833 states to 14833 states and 23209 transitions. [2022-11-03 02:19:37,223 INFO L78 Accepts]: Start accepts. Automaton has 14833 states and 23209 transitions. Word has length 422 [2022-11-03 02:19:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:37,226 INFO L495 AbstractCegarLoop]: Abstraction has 14833 states and 23209 transitions. [2022-11-03 02:19:37,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:19:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14833 states and 23209 transitions. [2022-11-03 02:19:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-03 02:19:37,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:37,246 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:19:37,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:37,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1824526994, now seen corresponding path program 1 times [2022-11-03 02:19:37,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729045109] [2022-11-03 02:19:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:37,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2152 trivial. 0 not checked. [2022-11-03 02:19:39,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:39,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729045109] [2022-11-03 02:19:39,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729045109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:39,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:39,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:39,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16840835] [2022-11-03 02:19:39,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:39,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:39,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:39,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:39,328 INFO L87 Difference]: Start difference. First operand 14833 states and 23209 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:19:41,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:44,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:46,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:48,218 INFO L93 Difference]: Finished difference Result 14835 states and 23210 transitions. [2022-11-03 02:19:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 423 [2022-11-03 02:19:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:48,288 INFO L225 Difference]: With dead ends: 14835 [2022-11-03 02:19:48,288 INFO L226 Difference]: Without dead ends: 14832 [2022-11-03 02:19:48,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:48,295 INFO L413 NwaCegarLoop]: 6390 mSDtfsCounter, 6781 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6786 SdHoareTripleChecker+Valid, 6444 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:48,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6786 Valid, 6444 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 600 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 02:19:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14832 states. [2022-11-03 02:19:49,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14832 to 14832. [2022-11-03 02:19:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14832 states, 10123 states have (on average 1.4209226513879285) internal successors, (14384), 10195 states have internal predecessors, (14384), 4402 states have call successors, (4402), 309 states have call predecessors, (4402), 306 states have return successors, (4421), 4371 states have call predecessors, (4421), 4399 states have call successors, (4421) [2022-11-03 02:19:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14832 states to 14832 states and 23207 transitions. [2022-11-03 02:19:49,890 INFO L78 Accepts]: Start accepts. Automaton has 14832 states and 23207 transitions. Word has length 423 [2022-11-03 02:19:49,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:49,891 INFO L495 AbstractCegarLoop]: Abstraction has 14832 states and 23207 transitions. [2022-11-03 02:19:49,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:19:49,892 INFO L276 IsEmpty]: Start isEmpty. Operand 14832 states and 23207 transitions. [2022-11-03 02:19:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-03 02:19:49,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:49,913 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:49,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:19:49,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:49,915 INFO L85 PathProgramCache]: Analyzing trace with hash 723296113, now seen corresponding path program 1 times [2022-11-03 02:19:49,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:49,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679728086] [2022-11-03 02:19:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:49,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2152 trivial. 0 not checked. [2022-11-03 02:19:52,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:52,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679728086] [2022-11-03 02:19:52,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679728086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:52,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:52,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:52,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111080139] [2022-11-03 02:19:52,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:52,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:52,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:52,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:52,176 INFO L87 Difference]: Start difference. First operand 14832 states and 23207 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:19:54,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:57,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:59,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:01,143 INFO L93 Difference]: Finished difference Result 29529 states and 46279 transitions. [2022-11-03 02:20:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:01,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 424 [2022-11-03 02:20:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:01,222 INFO L225 Difference]: With dead ends: 29529 [2022-11-03 02:20:01,222 INFO L226 Difference]: Without dead ends: 14757 [2022-11-03 02:20:01,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:01,301 INFO L413 NwaCegarLoop]: 6371 mSDtfsCounter, 6757 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6762 SdHoareTripleChecker+Valid, 6425 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:01,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6762 Valid, 6425 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 596 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 02:20:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14757 states. [2022-11-03 02:20:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14757 to 14742. [2022-11-03 02:20:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14742 states, 10070 states have (on average 1.4219463753723933) internal successors, (14319), 10143 states have internal predecessors, (14319), 4381 states have call successors, (4381), 294 states have call predecessors, (4381), 290 states have return successors, (4401), 4348 states have call predecessors, (4401), 4379 states have call successors, (4401) [2022-11-03 02:20:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14742 states to 14742 states and 23101 transitions. [2022-11-03 02:20:03,099 INFO L78 Accepts]: Start accepts. Automaton has 14742 states and 23101 transitions. Word has length 424 [2022-11-03 02:20:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:03,100 INFO L495 AbstractCegarLoop]: Abstraction has 14742 states and 23101 transitions. [2022-11-03 02:20:03,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:20:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 14742 states and 23101 transitions. [2022-11-03 02:20:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-11-03 02:20:03,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:03,146 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:03,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:20:03,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash 848872867, now seen corresponding path program 1 times [2022-11-03 02:20:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:03,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241631517] [2022-11-03 02:20:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2864 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2856 trivial. 0 not checked. [2022-11-03 02:20:05,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:05,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241631517] [2022-11-03 02:20:05,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241631517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:05,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:05,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:05,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442235985] [2022-11-03 02:20:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:05,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:05,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:05,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:05,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:05,439 INFO L87 Difference]: Start difference. First operand 14742 states and 23101 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:20:07,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:11,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:13,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:15,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:17,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:19,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:21,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:24,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:24,562 INFO L93 Difference]: Finished difference Result 43416 states and 68079 transitions. [2022-11-03 02:20:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:24,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 560 [2022-11-03 02:20:24,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:24,696 INFO L225 Difference]: With dead ends: 43416 [2022-11-03 02:20:24,696 INFO L226 Difference]: Without dead ends: 28739 [2022-11-03 02:20:24,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:24,759 INFO L413 NwaCegarLoop]: 11183 mSDtfsCounter, 6284 mSDsluCounter, 6927 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6284 SdHoareTripleChecker+Valid, 17532 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:24,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6284 Valid, 17532 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1626 Invalid, 5 Unknown, 0 Unchecked, 17.7s Time] [2022-11-03 02:20:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2022-11-03 02:20:27,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 28729. [2022-11-03 02:20:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28729 states, 19746 states have (on average 1.4290489213005166) internal successors, (28218), 19889 states have internal predecessors, (28218), 8402 states have call successors, (8402), 586 states have call predecessors, (8402), 580 states have return successors, (8442), 8341 states have call predecessors, (8442), 8400 states have call successors, (8442) [2022-11-03 02:20:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28729 states to 28729 states and 45062 transitions. [2022-11-03 02:20:27,911 INFO L78 Accepts]: Start accepts. Automaton has 28729 states and 45062 transitions. Word has length 560 [2022-11-03 02:20:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:27,912 INFO L495 AbstractCegarLoop]: Abstraction has 28729 states and 45062 transitions. [2022-11-03 02:20:27,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:20:27,913 INFO L276 IsEmpty]: Start isEmpty. Operand 28729 states and 45062 transitions. [2022-11-03 02:20:27,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2022-11-03 02:20:27,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:27,969 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 17, 17, 17, 17, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:27,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:20:27,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:27,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:27,971 INFO L85 PathProgramCache]: Analyzing trace with hash 745488210, now seen corresponding path program 1 times [2022-11-03 02:20:27,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:27,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229064840] [2022-11-03 02:20:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 3064 trivial. 0 not checked. [2022-11-03 02:20:30,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:30,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229064840] [2022-11-03 02:20:30,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229064840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:30,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:30,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:30,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980901882] [2022-11-03 02:20:30,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:30,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:30,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:30,122 INFO L87 Difference]: Start difference. First operand 28729 states and 45062 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:20:32,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:37,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:39,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:40,697 INFO L93 Difference]: Finished difference Result 45710 states and 71691 transitions. [2022-11-03 02:20:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:40,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 642 [2022-11-03 02:20:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:40,767 INFO L225 Difference]: With dead ends: 45710 [2022-11-03 02:20:40,767 INFO L226 Difference]: Without dead ends: 17046 [2022-11-03 02:20:40,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:40,856 INFO L413 NwaCegarLoop]: 9595 mSDtfsCounter, 6793 mSDsluCounter, 3713 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6798 SdHoareTripleChecker+Valid, 12974 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:40,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6798 Valid, 12974 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1240 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2022-11-03 02:20:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17046 states. [2022-11-03 02:20:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17046 to 17034. [2022-11-03 02:20:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17034 states, 11692 states have (on average 1.4239651043448511) internal successors, (16649), 11763 states have internal predecessors, (16649), 5022 states have call successors, (5022), 323 states have call predecessors, (5022), 319 states have return successors, (5041), 4991 states have call predecessors, (5041), 5020 states have call successors, (5041) [2022-11-03 02:20:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17034 states to 17034 states and 26712 transitions. [2022-11-03 02:20:42,408 INFO L78 Accepts]: Start accepts. Automaton has 17034 states and 26712 transitions. Word has length 642 [2022-11-03 02:20:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:42,409 INFO L495 AbstractCegarLoop]: Abstraction has 17034 states and 26712 transitions. [2022-11-03 02:20:42,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:20:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 17034 states and 26712 transitions. [2022-11-03 02:20:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2515 [2022-11-03 02:20:42,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:42,529 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 177, 177, 177, 177, 177, 177, 177, 17, 17, 17, 17, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:42,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:20:42,530 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:42,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1524223830, now seen corresponding path program 1 times [2022-11-03 02:20:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:42,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813128321] [2022-11-03 02:20:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:42,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 156795 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 156715 trivial. 0 not checked. [2022-11-03 02:20:57,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:57,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813128321] [2022-11-03 02:20:57,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813128321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:57,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805541023] [2022-11-03 02:20:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:57,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:57,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:57,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:57,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:22:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:26,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 30266 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:22:26,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 156795 backedges. 24412 proven. 0 refuted. 0 times theorem prover too weak. 132383 trivial. 0 not checked. [2022-11-03 02:22:26,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:22:26,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805541023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:26,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:22:26,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-11-03 02:22:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272411840] [2022-11-03 02:22:26,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:26,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:22:26,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:22:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:22:26,773 INFO L87 Difference]: Start difference. First operand 17034 states and 26712 transitions. Second operand has 6 states, 4 states have (on average 89.75) internal successors, (359), 6 states have internal predecessors, (359), 3 states have call successors, (211), 2 states have call predecessors, (211), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) [2022-11-03 02:22:29,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:37,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:40,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:42,950 INFO L93 Difference]: Finished difference Result 34050 states and 54676 transitions. [2022-11-03 02:22:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:22:42,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 89.75) internal successors, (359), 6 states have internal predecessors, (359), 3 states have call successors, (211), 2 states have call predecessors, (211), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) Word has length 2514 [2022-11-03 02:22:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:43,021 INFO L225 Difference]: With dead ends: 34050 [2022-11-03 02:22:43,022 INFO L226 Difference]: Without dead ends: 17040 [2022-11-03 02:22:43,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2521 GetRequests, 2513 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:22:43,088 INFO L413 NwaCegarLoop]: 6104 mSDtfsCounter, 3 mSDsluCounter, 26220 mSDsCounter, 0 mSdLazyCounter, 4672 mSolverCounterSat, 252 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30009 SdHoareTripleChecker+Invalid, 4927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 4672 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:43,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30009 Invalid, 4927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 4672 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2022-11-03 02:22:43,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17040 states. [2022-11-03 02:22:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17040 to 17040. [2022-11-03 02:22:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17040 states, 11698 states have (on average 1.4237476491707983) internal successors, (16655), 11769 states have internal predecessors, (16655), 5022 states have call successors, (5022), 323 states have call predecessors, (5022), 319 states have return successors, (5041), 4991 states have call predecessors, (5041), 5020 states have call successors, (5041) [2022-11-03 02:22:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17040 states to 17040 states and 26718 transitions. [2022-11-03 02:22:44,872 INFO L78 Accepts]: Start accepts. Automaton has 17040 states and 26718 transitions. Word has length 2514 [2022-11-03 02:22:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:44,873 INFO L495 AbstractCegarLoop]: Abstraction has 17040 states and 26718 transitions. [2022-11-03 02:22:44,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 89.75) internal successors, (359), 6 states have internal predecessors, (359), 3 states have call successors, (211), 2 states have call predecessors, (211), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) [2022-11-03 02:22:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 17040 states and 26718 transitions. [2022-11-03 02:22:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2544 [2022-11-03 02:22:44,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:44,959 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 177, 177, 177, 177, 177, 177, 177, 17, 17, 17, 17, 17, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:45,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:22:45,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:45,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:45,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:45,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1937200400, now seen corresponding path program 1 times [2022-11-03 02:22:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:45,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813887318] [2022-11-03 02:22:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:45,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 157230 backedges. 0 proven. 137 refuted. 0 times theorem prover too weak. 157093 trivial. 0 not checked. [2022-11-03 02:22:58,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813887318] [2022-11-03 02:22:58,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813887318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336488664] [2022-11-03 02:22:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:58,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:58,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:58,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:58,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:23:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:05,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 30676 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-03 02:23:06,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:06,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-03 02:23:06,349 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:23:06,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2022-11-03 02:23:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 157230 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 157216 trivial. 0 not checked. [2022-11-03 02:23:06,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:23:06,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2022-11-03 02:23:06,922 INFO L356 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2022-11-03 02:23:06,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 1 [2022-11-03 02:23:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 157230 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 157218 trivial. 0 not checked. [2022-11-03 02:23:09,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336488664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:23:09,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1222839261] [2022-11-03 02:23:09,846 INFO L159 IcfgInterpreter]: Started Sifa with 572 locations of interest [2022-11-03 02:23:09,847 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:23:09,855 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:23:09,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:23:09,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2022-11-03 02:23:09,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421123534] [2022-11-03 02:23:09,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:23:09,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:23:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:23:09,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:23:09,872 INFO L87 Difference]: Start difference. First operand 17040 states and 26718 transitions. Second operand has 20 states, 12 states have (on average 56.583333333333336) internal successors, (679), 16 states have internal predecessors, (679), 10 states have call successors, (395), 6 states have call predecessors, (395), 5 states have return successors, (386), 4 states have call predecessors, (386), 6 states have call successors, (386) [2022-11-03 02:23:12,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:32,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:38,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:40,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:42,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:44,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:45,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:47,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:50,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:52,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:54,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:55,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:16,032 INFO L93 Difference]: Finished difference Result 34238 states and 54242 transitions. [2022-11-03 02:24:16,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 02:24:16,034 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 12 states have (on average 56.583333333333336) internal successors, (679), 16 states have internal predecessors, (679), 10 states have call successors, (395), 6 states have call predecessors, (395), 5 states have return successors, (386), 4 states have call predecessors, (386), 6 states have call successors, (386) Word has length 2543 [2022-11-03 02:24:16,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:16,125 INFO L225 Difference]: With dead ends: 34238 [2022-11-03 02:24:16,125 INFO L226 Difference]: Without dead ends: 17240 [2022-11-03 02:24:16,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5104 GetRequests, 5076 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:24:16,200 INFO L413 NwaCegarLoop]: 6098 mSDtfsCounter, 64 mSDsluCounter, 71140 mSDsCounter, 0 mSdLazyCounter, 12328 mSolverCounterSat, 305 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 71086 SdHoareTripleChecker+Invalid, 12642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 12328 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:16,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 71086 Invalid, 12642 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [305 Valid, 12328 Invalid, 9 Unknown, 0 Unchecked, 63.5s Time] [2022-11-03 02:24:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17240 states. [2022-11-03 02:24:18,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17240 to 17180. [2022-11-03 02:24:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17180 states, 11792 states have (on average 1.4241010854816825) internal successors, (16793), 11877 states have internal predecessors, (16793), 5044 states have call successors, (5044), 343 states have call predecessors, (5044), 343 states have return successors, (5091), 5003 states have call predecessors, (5091), 5042 states have call successors, (5091) [2022-11-03 02:24:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17180 states to 17180 states and 26928 transitions. [2022-11-03 02:24:18,409 INFO L78 Accepts]: Start accepts. Automaton has 17180 states and 26928 transitions. Word has length 2543 [2022-11-03 02:24:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:18,410 INFO L495 AbstractCegarLoop]: Abstraction has 17180 states and 26928 transitions. [2022-11-03 02:24:18,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 12 states have (on average 56.583333333333336) internal successors, (679), 16 states have internal predecessors, (679), 10 states have call successors, (395), 6 states have call predecessors, (395), 5 states have return successors, (386), 4 states have call predecessors, (386), 6 states have call successors, (386) [2022-11-03 02:24:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 17180 states and 26928 transitions. [2022-11-03 02:24:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2543 [2022-11-03 02:24:18,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:18,534 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 177, 177, 177, 177, 177, 177, 177, 28, 17, 17, 17, 17, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:18,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:18,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:24:18,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:18,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1466740923, now seen corresponding path program 1 times [2022-11-03 02:24:18,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:18,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792114941] [2022-11-03 02:24:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:18,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 157655 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 157639 trivial. 0 not checked. [2022-11-03 02:24:23,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:23,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792114941] [2022-11-03 02:24:23,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792114941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:23,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:23,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:24:23,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075246855] [2022-11-03 02:24:23,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:23,180 INFO L87 Difference]: Start difference. First operand 17180 states and 26928 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 3 states have call successors, (207), 2 states have call predecessors, (207), 2 states have return successors, (204), 3 states have call predecessors, (204), 3 states have call successors, (204) [2022-11-03 02:24:25,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:28,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:30,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:33,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:37,278 INFO L93 Difference]: Finished difference Result 40149 states and 62928 transitions. [2022-11-03 02:24:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 3 states have call successors, (207), 2 states have call predecessors, (207), 2 states have return successors, (204), 3 states have call predecessors, (204), 3 states have call successors, (204) Word has length 2542 [2022-11-03 02:24:37,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:37,421 INFO L225 Difference]: With dead ends: 40149 [2022-11-03 02:24:37,421 INFO L226 Difference]: Without dead ends: 25293 [2022-11-03 02:24:37,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:37,479 INFO L413 NwaCegarLoop]: 10660 mSDtfsCounter, 6463 mSDsluCounter, 6572 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 162 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6464 SdHoareTripleChecker+Valid, 16655 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:37,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6464 Valid, 16655 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1929 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2022-11-03 02:24:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25293 states. [2022-11-03 02:24:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25293 to 25273. [2022-11-03 02:24:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25273 states, 17372 states have (on average 1.419468109601658) internal successors, (24659), 17503 states have internal predecessors, (24659), 7364 states have call successors, (7364), 538 states have call predecessors, (7364), 536 states have return successors, (7448), 7299 states have call predecessors, (7448), 7362 states have call successors, (7448) [2022-11-03 02:24:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25273 states to 25273 states and 39471 transitions. [2022-11-03 02:24:40,245 INFO L78 Accepts]: Start accepts. Automaton has 25273 states and 39471 transitions. Word has length 2542 [2022-11-03 02:24:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:40,251 INFO L495 AbstractCegarLoop]: Abstraction has 25273 states and 39471 transitions. [2022-11-03 02:24:40,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 3 states have call successors, (207), 2 states have call predecessors, (207), 2 states have return successors, (204), 3 states have call predecessors, (204), 3 states have call successors, (204) [2022-11-03 02:24:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 25273 states and 39471 transitions. [2022-11-03 02:24:40,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2541 [2022-11-03 02:24:40,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:40,378 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 177, 177, 177, 177, 177, 177, 177, 28, 17, 17, 17, 17, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:40,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:24:40,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1590405535, now seen corresponding path program 1 times [2022-11-03 02:24:40,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:40,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220983331] [2022-11-03 02:24:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:40,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 157655 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 157462 trivial. 0 not checked. [2022-11-03 02:24:53,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:53,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220983331] [2022-11-03 02:24:53,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220983331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:53,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347698279] [2022-11-03 02:24:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:53,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:53,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:53,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:53,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e0e83f-d45f-4826-8205-4ebf2c486fd0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process