./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.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_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/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_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/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_2eea8a97-2102-4bda-9af3-c4c900ab450f/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 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- 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 03:29:46,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:29:46,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:29:46,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:29:46,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:29:46,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:29:46,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:29:46,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:29:46,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:29:46,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:29:46,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:29:46,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:29:46,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:29:46,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:29:46,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:29:46,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:29:46,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:29:46,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:29:46,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:29:46,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:29:46,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:29:46,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:29:46,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:29:46,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:29:46,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:29:46,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:29:46,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:29:46,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:29:46,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:29:46,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:29:46,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:29:46,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:29:46,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:29:46,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:29:46,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:29:46,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:29:46,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:29:47,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:29:47,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:29:47,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:29:47,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:29:47,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:29:47,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:29:47,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:29:47,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:29:47,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:29:47,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:29:47,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:29:47,048 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:29:47,048 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:29:47,048 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:29:47,048 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:29:47,049 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:29:47,050 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:29:47,050 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:29:47,050 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:29:47,050 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:29:47,051 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:29:47,051 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:29:47,051 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:29:47,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:29:47,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:29:47,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:29:47,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:29:47,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:29:47,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:29:47,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:29:47,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:29:47,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:29:47,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:29:47,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:29:47,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:29:47,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:29:47,057 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:29:47,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:29:47,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:29:47,057 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:29:47,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:29:47,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:29:47,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:29:47,058 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_2eea8a97-2102-4bda-9af3-c4c900ab450f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2022-11-03 03:29:47,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:29:47,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:29:47,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:29:47,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:29:47,385 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:29:47,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-03 03:29:47,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/data/5b67e21e4/474612ec298941c686cfe00aeedb190a/FLAG427b644f1 [2022-11-03 03:29:48,536 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:29:48,537 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-03 03:29:48,605 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/data/5b67e21e4/474612ec298941c686cfe00aeedb190a/FLAG427b644f1 [2022-11-03 03:29:48,908 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/data/5b67e21e4/474612ec298941c686cfe00aeedb190a [2022-11-03 03:29:48,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:29:48,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:29:48,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:29:48,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:29:48,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:29:48,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738f7f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48, skipping insertion in model container [2022-11-03 03:29:48,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:29:49,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:29:51,360 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_2eea8a97-2102-4bda-9af3-c4c900ab450f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-11-03 03:29:51,414 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-03 03:29:51,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:29:51,490 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:29:51,861 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_2eea8a97-2102-4bda-9af3-c4c900ab450f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-11-03 03:29:51,865 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-03 03:29:51,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:29:52,009 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:29:52,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52 WrapperNode [2022-11-03 03:29:52,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:29:52,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:29:52,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:29:52,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:29:52,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,307 INFO L138 Inliner]: procedures = 275, calls = 1982, calls flagged for inlining = 131, calls inlined = 123, statements flattened = 4568 [2022-11-03 03:29:52,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:29:52,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:29:52,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:29:52,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:29:52,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:29:52,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:29:52,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:29:52,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:29:52,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (1/1) ... [2022-11-03 03:29:52,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:29:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:52,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:29:52,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:29:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 03:29:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 03:29:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_2 [2022-11-03 03:29:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_2 [2022-11-03 03:29:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:29:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:29:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:29:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:29:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:29:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:29:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:29:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:29:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:29:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:29:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 03:29:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 03:29:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2022-11-03 03:29:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2022-11-03 03:29:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:29:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:29:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-11-03 03:29:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-11-03 03:29:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2022-11-03 03:29:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2022-11-03 03:29:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 03:29:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 03:29:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2022-11-03 03:29:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2022-11-03 03:29:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-03 03:29:52,644 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-03 03:29:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:29:52,644 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:29:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:29:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:29:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2022-11-03 03:29:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2022-11-03 03:29:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:29:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:29:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 03:29:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 03:29:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:29:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:29:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:29:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:29:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:29:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:29:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 03:29:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 03:29:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-03 03:29:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-03 03:29:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2022-11-03 03:29:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2022-11-03 03:29:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 03:29:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 03:29:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:29:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2022-11-03 03:29:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2022-11-03 03:29:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 03:29:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 03:29:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:29:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:29:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:29:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:29:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-03 03:29:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-03 03:29:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2022-11-03 03:29:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2022-11-03 03:29:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:29:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:29:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2022-11-03 03:29:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2022-11-03 03:29:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2022-11-03 03:29:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2022-11-03 03:29:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 03:29:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 03:29:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:29:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2022-11-03 03:29:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2022-11-03 03:29:52,652 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 03:29:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 03:29:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:29:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 03:29:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 03:29:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 03:29:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 03:29:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:29:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:29:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2022-11-03 03:29:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2022-11-03 03:29:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 03:29:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 03:29:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:29:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:29:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:29:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:29:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 03:29:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 03:29:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:29:52,656 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:29:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2022-11-03 03:29:52,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2022-11-03 03:29:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:29:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2022-11-03 03:29:52,656 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2022-11-03 03:29:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:29:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:29:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:29:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2022-11-03 03:29:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2022-11-03 03:29:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2022-11-03 03:29:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2022-11-03 03:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:29:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:29:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:29:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2022-11-03 03:29:52,659 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2022-11-03 03:29:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:29:52,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:29:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-03 03:29:52,659 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-03 03:29:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2022-11-03 03:29:52,660 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2022-11-03 03:29:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:29:52,660 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:29:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:29:52,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:29:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-03 03:29:52,661 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-03 03:29:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:29:52,661 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:29:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2022-11-03 03:29:52,661 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2022-11-03 03:29:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 03:29:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 03:29:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:29:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:29:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:29:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-03 03:29:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-03 03:29:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2022-11-03 03:29:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2022-11-03 03:29:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 03:29:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 03:29:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:29:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:29:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2022-11-03 03:29:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2022-11-03 03:29:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2022-11-03 03:29:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2022-11-03 03:29:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:29:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:29:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:29:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2022-11-03 03:29:52,707 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2022-11-03 03:29:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:29:52,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:29:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 03:29:52,707 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 03:29:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:29:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 03:29:52,707 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 03:29:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:29:52,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:29:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:29:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:29:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2022-11-03 03:29:52,708 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2022-11-03 03:29:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 03:29:52,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 03:29:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ioctl [2022-11-03 03:29:52,708 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ioctl [2022-11-03 03:29:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_2 [2022-11-03 03:29:52,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_2 [2022-11-03 03:29:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:29:52,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:29:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2022-11-03 03:29:52,709 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2022-11-03 03:29:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2022-11-03 03:29:52,709 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2022-11-03 03:29:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 03:29:52,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 03:29:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2022-11-03 03:29:52,710 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2022-11-03 03:29:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 03:29:52,710 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 03:29:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2022-11-03 03:29:52,710 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2022-11-03 03:29:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:29:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2022-11-03 03:29:52,711 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2022-11-03 03:29:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-03 03:29:52,711 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-03 03:29:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2022-11-03 03:29:52,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2022-11-03 03:29:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-11-03 03:29:52,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-11-03 03:29:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:29:52,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:29:53,531 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:29:53,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:29:54,061 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:30:01,158 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:30:02,393 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:30:02,393 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:30:02,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:02 BoogieIcfgContainer [2022-11-03 03:30:02,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:30:02,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:30:02,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:30:02,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:30:02,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:29:48" (1/3) ... [2022-11-03 03:30:02,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23489582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:02, skipping insertion in model container [2022-11-03 03:30:02,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:52" (2/3) ... [2022-11-03 03:30:02,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23489582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:02, skipping insertion in model container [2022-11-03 03:30:02,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:02" (3/3) ... [2022-11-03 03:30:02,410 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-03 03:30:02,431 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:30:02,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:30:02,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:30:02,558 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;@6d17bf4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:30:02,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:30:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 1228 states, 727 states have (on average 1.2943603851444292) internal successors, (941), 753 states have internal predecessors, (941), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) [2022-11-03 03:30:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:30:02,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:02,606 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:02,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:02,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash -306098764, now seen corresponding path program 1 times [2022-11-03 03:30:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:02,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536181885] [2022-11-03 03:30:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-03 03:30:03,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:03,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536181885] [2022-11-03 03:30:03,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536181885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:03,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:03,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:03,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706006067] [2022-11-03 03:30:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:03,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:03,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:03,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:03,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:03,764 INFO L87 Difference]: Start difference. First operand has 1228 states, 727 states have (on average 1.2943603851444292) internal successors, (941), 753 states have internal predecessors, (941), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:30:05,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:10,228 INFO L93 Difference]: Finished difference Result 3233 states and 4633 transitions. [2022-11-03 03:30:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:10,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-11-03 03:30:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:10,273 INFO L225 Difference]: With dead ends: 3233 [2022-11-03 03:30:10,277 INFO L226 Difference]: Without dead ends: 1999 [2022-11-03 03:30:10,291 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 03:30:10,294 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1144 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:10,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 3287 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 03:30:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-11-03 03:30:10,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1995. [2022-11-03 03:30:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1187 states have (on average 1.2771693344566133) internal successors, (1516), 1212 states have internal predecessors, (1516), 650 states have call successors, (650), 158 states have call predecessors, (650), 157 states have return successors, (653), 646 states have call predecessors, (653), 649 states have call successors, (653) [2022-11-03 03:30:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2819 transitions. [2022-11-03 03:30:10,579 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2819 transitions. Word has length 131 [2022-11-03 03:30:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:10,581 INFO L495 AbstractCegarLoop]: Abstraction has 1995 states and 2819 transitions. [2022-11-03 03:30:10,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:30:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2819 transitions. [2022-11-03 03:30:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-03 03:30:10,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:10,591 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:10,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:30:10,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -79676592, now seen corresponding path program 1 times [2022-11-03 03:30:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:10,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601329873] [2022-11-03 03:30:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:30:11,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:11,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601329873] [2022-11-03 03:30:11,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601329873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:11,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:11,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850076086] [2022-11-03 03:30:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:11,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:11,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:11,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:11,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:11,629 INFO L87 Difference]: Start difference. First operand 1995 states and 2819 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:30:13,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:20,640 WARN L539 Checker$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 03:30:21,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:23,153 INFO L93 Difference]: Finished difference Result 5852 states and 8264 transitions. [2022-11-03 03:30:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:30:23,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 185 [2022-11-03 03:30:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:23,181 INFO L225 Difference]: With dead ends: 5852 [2022-11-03 03:30:23,181 INFO L226 Difference]: Without dead ends: 3882 [2022-11-03 03:30:23,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:30:23,192 INFO L413 NwaCegarLoop]: 2102 mSDtfsCounter, 1546 mSDsluCounter, 6378 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 7773 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:23,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 7773 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 991 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 03:30:23,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-11-03 03:30:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3858. [2022-11-03 03:30:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2296 states have (on average 1.279616724738676) internal successors, (2938), 2354 states have internal predecessors, (2938), 1249 states have call successors, (1249), 313 states have call predecessors, (1249), 312 states have return successors, (1256), 1233 states have call predecessors, (1256), 1248 states have call successors, (1256) [2022-11-03 03:30:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5443 transitions. [2022-11-03 03:30:23,390 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5443 transitions. Word has length 185 [2022-11-03 03:30:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:23,391 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 5443 transitions. [2022-11-03 03:30:23,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:30:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5443 transitions. [2022-11-03 03:30:23,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-03 03:30:23,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:23,397 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:23,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:30:23,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:23,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -553608569, now seen corresponding path program 1 times [2022-11-03 03:30:23,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:23,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138129161] [2022-11-03 03:30:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:30:24,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:24,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138129161] [2022-11-03 03:30:24,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138129161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:24,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:24,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:24,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838918002] [2022-11-03 03:30:24,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:24,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:24,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:24,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:24,131 INFO L87 Difference]: Start difference. First operand 3858 states and 5443 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:30:26,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:34,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:34,458 INFO L93 Difference]: Finished difference Result 8416 states and 11795 transitions. [2022-11-03 03:30:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:30:34,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2022-11-03 03:30:34,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:34,494 INFO L225 Difference]: With dead ends: 8416 [2022-11-03 03:30:34,494 INFO L226 Difference]: Without dead ends: 5758 [2022-11-03 03:30:34,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:30:34,509 INFO L413 NwaCegarLoop]: 1903 mSDtfsCounter, 1540 mSDsluCounter, 5914 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:34,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 7174 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 891 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-03 03:30:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2022-11-03 03:30:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 5724. [2022-11-03 03:30:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5724 states, 3411 states have (on average 1.279683377308707) internal successors, (4365), 3492 states have internal predecessors, (4365), 1846 states have call successors, (1846), 467 states have call predecessors, (1846), 466 states have return successors, (1857), 1828 states have call predecessors, (1857), 1845 states have call successors, (1857) [2022-11-03 03:30:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 8068 transitions. [2022-11-03 03:30:34,789 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 8068 transitions. Word has length 188 [2022-11-03 03:30:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:34,790 INFO L495 AbstractCegarLoop]: Abstraction has 5724 states and 8068 transitions. [2022-11-03 03:30:34,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:30:34,790 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 8068 transitions. [2022-11-03 03:30:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 03:30:34,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:34,797 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:34,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:30:34,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash 58142163, now seen corresponding path program 1 times [2022-11-03 03:30:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:34,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990529285] [2022-11-03 03:30:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:34,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:30:35,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:35,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990529285] [2022-11-03 03:30:35,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990529285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:35,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:35,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:35,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390037008] [2022-11-03 03:30:35,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:35,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:35,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:35,383 INFO L87 Difference]: Start difference. First operand 5724 states and 8068 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:30:37,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:39,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:44,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:48,363 INFO L93 Difference]: Finished difference Result 10292 states and 14424 transitions. [2022-11-03 03:30:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:30:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 187 [2022-11-03 03:30:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:48,399 INFO L225 Difference]: With dead ends: 10292 [2022-11-03 03:30:48,399 INFO L226 Difference]: Without dead ends: 5766 [2022-11-03 03:30:48,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:30:48,419 INFO L413 NwaCegarLoop]: 1903 mSDtfsCounter, 1540 mSDsluCounter, 5916 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:48,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 7174 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 892 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-11-03 03:30:48,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2022-11-03 03:30:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5732. [2022-11-03 03:30:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 3419 states have (on average 1.2790289558350394) internal successors, (4373), 3498 states have internal predecessors, (4373), 1844 states have call successors, (1844), 469 states have call predecessors, (1844), 468 states have return successors, (1855), 1828 states have call predecessors, (1855), 1843 states have call successors, (1855) [2022-11-03 03:30:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 8072 transitions. [2022-11-03 03:30:48,717 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 8072 transitions. Word has length 187 [2022-11-03 03:30:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:48,718 INFO L495 AbstractCegarLoop]: Abstraction has 5732 states and 8072 transitions. [2022-11-03 03:30:48,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:30:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 8072 transitions. [2022-11-03 03:30:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-03 03:30:48,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:48,726 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:48,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:30:48,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:48,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:48,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1908911268, now seen corresponding path program 1 times [2022-11-03 03:30:48,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:48,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159342411] [2022-11-03 03:30:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:48,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:30:49,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:49,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159342411] [2022-11-03 03:30:49,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159342411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:49,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:49,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272530768] [2022-11-03 03:30:49,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:49,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:49,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:49,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:49,285 INFO L87 Difference]: Start difference. First operand 5732 states and 8072 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:30:51,742 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 03:30:53,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:59,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:03,089 INFO L93 Difference]: Finished difference Result 10104 states and 14123 transitions. [2022-11-03 03:31:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:31:03,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 186 [2022-11-03 03:31:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:03,120 INFO L225 Difference]: With dead ends: 10104 [2022-11-03 03:31:03,120 INFO L226 Difference]: Without dead ends: 5568 [2022-11-03 03:31:03,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:31:03,139 INFO L413 NwaCegarLoop]: 1903 mSDtfsCounter, 1540 mSDsluCounter, 5916 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:03,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 7174 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 892 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 03:31:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2022-11-03 03:31:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5540. [2022-11-03 03:31:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 3306 states have (on average 1.2770719903206291) internal successors, (4222), 3375 states have internal predecessors, (4222), 1769 states have call successors, (1769), 465 states have call predecessors, (1769), 464 states have return successors, (1780), 1757 states have call predecessors, (1780), 1768 states have call successors, (1780) [2022-11-03 03:31:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 7771 transitions. [2022-11-03 03:31:03,442 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 7771 transitions. Word has length 186 [2022-11-03 03:31:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:03,442 INFO L495 AbstractCegarLoop]: Abstraction has 5540 states and 7771 transitions. [2022-11-03 03:31:03,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 03:31:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 7771 transitions. [2022-11-03 03:31:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 03:31:03,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:03,451 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-11-03 03:31:03,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:31:03,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:03,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1146557114, now seen corresponding path program 1 times [2022-11-03 03:31:03,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:03,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046801376] [2022-11-03 03:31:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:03,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-03 03:31:04,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:04,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046801376] [2022-11-03 03:31:04,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046801376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:31:04,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968048123] [2022-11-03 03:31:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:04,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:04,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:04,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:04,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:31:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:05,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 3716 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:31:05,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:05,832 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:31:05,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:05,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968048123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:05,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:31:05,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-03 03:31:05,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097873183] [2022-11-03 03:31:05,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:05,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:31:05,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:31:05,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:31:05,836 INFO L87 Difference]: Start difference. First operand 5540 states and 7771 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:31:07,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:23,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:24,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:26,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:29,660 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 03:31:30,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:30,516 INFO L93 Difference]: Finished difference Result 13006 states and 18244 transitions. [2022-11-03 03:31:30,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:31:30,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 198 [2022-11-03 03:31:30,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:30,577 INFO L225 Difference]: With dead ends: 13006 [2022-11-03 03:31:30,577 INFO L226 Difference]: Without dead ends: 9148 [2022-11-03 03:31:30,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:31:30,600 INFO L413 NwaCegarLoop]: 2594 mSDtfsCounter, 1539 mSDsluCounter, 13506 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 14466 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:30,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 14466 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2077 Invalid, 2 Unknown, 0 Unchecked, 24.2s Time] [2022-11-03 03:31:30,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9148 states. [2022-11-03 03:31:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9148 to 9086. [2022-11-03 03:31:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 5427 states have (on average 1.2782384374424176) internal successors, (6937), 5548 states have internal predecessors, (6937), 2888 states have call successors, (2888), 767 states have call predecessors, (2888), 770 states have return successors, (2917), 2864 states have call predecessors, (2917), 2887 states have call successors, (2917) [2022-11-03 03:31:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 12742 transitions. [2022-11-03 03:31:31,391 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 12742 transitions. Word has length 198 [2022-11-03 03:31:31,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:31,392 INFO L495 AbstractCegarLoop]: Abstraction has 9086 states and 12742 transitions. [2022-11-03 03:31:31,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:31:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 12742 transitions. [2022-11-03 03:31:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-03 03:31:31,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:31,404 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-11-03 03:31:31,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:31,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:31,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:31,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash -604278089, now seen corresponding path program 1 times [2022-11-03 03:31:31,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:31,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128670433] [2022-11-03 03:31:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:31,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:31:32,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:32,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128670433] [2022-11-03 03:31:32,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128670433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:31:32,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910868397] [2022-11-03 03:31:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:32,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:32,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:32,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:32,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:31:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:33,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 3718 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:31:33,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:31:34,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:34,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910868397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:34,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:31:34,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 03:31:34,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42354074] [2022-11-03 03:31:34,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:34,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:31:34,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:34,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:31:34,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:31:34,004 INFO L87 Difference]: Start difference. First operand 9086 states and 12742 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:31:36,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:44,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:50,845 WARN L539 Checker$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 03:31:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:52,393 INFO L93 Difference]: Finished difference Result 20116 states and 28206 transitions. [2022-11-03 03:31:52,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:31:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 199 [2022-11-03 03:31:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:52,460 INFO L225 Difference]: With dead ends: 20116 [2022-11-03 03:31:52,460 INFO L226 Difference]: Without dead ends: 12712 [2022-11-03 03:31:52,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:31:52,496 INFO L413 NwaCegarLoop]: 2833 mSDtfsCounter, 1535 mSDsluCounter, 14589 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 15649 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:52,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 15649 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2255 Invalid, 2 Unknown, 0 Unchecked, 17.7s Time] [2022-11-03 03:31:52,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2022-11-03 03:31:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 12636. [2022-11-03 03:31:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12636 states, 7550 states have (on average 1.2786754966887417) internal successors, (9654), 7731 states have internal predecessors, (9654), 4005 states have call successors, (4005), 1069 states have call predecessors, (4005), 1080 states have return successors, (4064), 3965 states have call predecessors, (4064), 4004 states have call successors, (4064) [2022-11-03 03:31:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12636 states to 12636 states and 17723 transitions. [2022-11-03 03:31:53,285 INFO L78 Accepts]: Start accepts. Automaton has 12636 states and 17723 transitions. Word has length 199 [2022-11-03 03:31:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:53,288 INFO L495 AbstractCegarLoop]: Abstraction has 12636 states and 17723 transitions. [2022-11-03 03:31:53,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:31:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand 12636 states and 17723 transitions. [2022-11-03 03:31:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-03 03:31:53,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:53,302 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-11-03 03:31:53,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:53,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:53,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2041693229, now seen corresponding path program 1 times [2022-11-03 03:31:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:53,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960633007] [2022-11-03 03:31:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:31:54,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:54,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960633007] [2022-11-03 03:31:54,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960633007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:31:54,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130348484] [2022-11-03 03:31:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:54,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:54,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:54,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:31:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 3720 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:31:55,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:31:55,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:55,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130348484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:55,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:31:55,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 03:31:55,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121801836] [2022-11-03 03:31:55,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:55,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:31:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:55,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:31:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:31:55,643 INFO L87 Difference]: Start difference. First operand 12636 states and 17723 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:31:57,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:58,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:00,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:01,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:09,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:10,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:13,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:15,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:19,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:21,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:22,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:24,289 INFO L93 Difference]: Finished difference Result 27216 states and 38160 transitions. [2022-11-03 03:32:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:32:24,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 200 [2022-11-03 03:32:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:24,362 INFO L225 Difference]: With dead ends: 27216 [2022-11-03 03:32:24,362 INFO L226 Difference]: Without dead ends: 16262 [2022-11-03 03:32:24,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:32:24,401 INFO L413 NwaCegarLoop]: 2397 mSDtfsCounter, 1580 mSDsluCounter, 12538 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 13447 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:24,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 13447 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 27.9s Time] [2022-11-03 03:32:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16262 states. [2022-11-03 03:32:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16262 to 14492. [2022-11-03 03:32:25,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14492 states, 8655 states have (on average 1.2791450028885039) internal successors, (11071), 8867 states have internal predecessors, (11071), 4602 states have call successors, (4602), 1221 states have call predecessors, (4602), 1234 states have return successors, (4671), 4554 states have call predecessors, (4671), 4601 states have call successors, (4671) [2022-11-03 03:32:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14492 states to 14492 states and 20344 transitions. [2022-11-03 03:32:25,314 INFO L78 Accepts]: Start accepts. Automaton has 14492 states and 20344 transitions. Word has length 200 [2022-11-03 03:32:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:25,315 INFO L495 AbstractCegarLoop]: Abstraction has 14492 states and 20344 transitions. [2022-11-03 03:32:25,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:32:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 14492 states and 20344 transitions. [2022-11-03 03:32:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-03 03:32:25,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:25,328 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-11-03 03:32:25,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:25,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 03:32:25,549 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1182648894, now seen corresponding path program 1 times [2022-11-03 03:32:25,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:25,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11720718] [2022-11-03 03:32:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:32:26,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:26,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11720718] [2022-11-03 03:32:26,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11720718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:32:26,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678327940] [2022-11-03 03:32:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:26,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:26,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:26,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:26,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:32:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:27,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 3722 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:32:27,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-03 03:32:27,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:32:27,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678327940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:27,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:32:27,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 03:32:27,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15517218] [2022-11-03 03:32:27,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:27,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:32:27,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:32:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:32:27,685 INFO L87 Difference]: Start difference. First operand 14492 states and 20344 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:32:28,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:31,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:33,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:35,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:36,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:45,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:46,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:49,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:51,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:53,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:55,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:55,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:55,698 INFO L93 Difference]: Finished difference Result 31198 states and 43724 transitions. [2022-11-03 03:32:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:32:55,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 201 [2022-11-03 03:32:55,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:55,787 INFO L225 Difference]: With dead ends: 31198 [2022-11-03 03:32:55,787 INFO L226 Difference]: Without dead ends: 18388 [2022-11-03 03:32:55,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:32:55,833 INFO L413 NwaCegarLoop]: 2396 mSDtfsCounter, 1576 mSDsluCounter, 12529 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 13442 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:55,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 13442 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1873 Invalid, 4 Unknown, 0 Unchecked, 27.2s Time] [2022-11-03 03:32:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18388 states. [2022-11-03 03:32:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18388 to 18236. [2022-11-03 03:32:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18236 states, 10864 states have (on average 1.2787187039764358) internal successors, (13892), 11138 states have internal predecessors, (13892), 5785 states have call successors, (5785), 1571 states have call predecessors, (5785), 1586 states have return successors, (5876), 5713 states have call predecessors, (5876), 5784 states have call successors, (5876) [2022-11-03 03:32:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18236 states to 18236 states and 25553 transitions. [2022-11-03 03:32:56,900 INFO L78 Accepts]: Start accepts. Automaton has 18236 states and 25553 transitions. Word has length 201 [2022-11-03 03:32:56,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:56,901 INFO L495 AbstractCegarLoop]: Abstraction has 18236 states and 25553 transitions. [2022-11-03 03:32:56,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:32:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 18236 states and 25553 transitions. [2022-11-03 03:32:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-03 03:32:56,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:56,915 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:56,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:57,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 03:32:57,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1932416516, now seen corresponding path program 1 times [2022-11-03 03:32:57,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:57,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064023715] [2022-11-03 03:32:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-03 03:32:57,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:57,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064023715] [2022-11-03 03:32:57,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064023715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:57,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:57,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:32:57,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115802776] [2022-11-03 03:32:57,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:57,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:32:57,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:57,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:32:57,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:57,475 INFO L87 Difference]: Start difference. First operand 18236 states and 25553 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:32:59,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:05,435 INFO L93 Difference]: Finished difference Result 47607 states and 66439 transitions. [2022-11-03 03:33:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:05,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 201 [2022-11-03 03:33:05,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:05,593 INFO L225 Difference]: With dead ends: 47607 [2022-11-03 03:33:05,594 INFO L226 Difference]: Without dead ends: 29399 [2022-11-03 03:33:05,661 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 03:33:05,662 INFO L413 NwaCegarLoop]: 2319 mSDtfsCounter, 1337 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:05,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 3789 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 537 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 03:33:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29399 states. [2022-11-03 03:33:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29399 to 29376. [2022-11-03 03:33:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29376 states, 17497 states have (on average 1.2769617648739784) internal successors, (22343), 18000 states have internal predecessors, (22343), 9200 states have call successors, (9200), 2647 states have call predecessors, (9200), 2678 states have return successors, (9339), 9054 states have call predecessors, (9339), 9199 states have call successors, (9339) [2022-11-03 03:33:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29376 states to 29376 states and 40882 transitions. [2022-11-03 03:33:07,128 INFO L78 Accepts]: Start accepts. Automaton has 29376 states and 40882 transitions. Word has length 201 [2022-11-03 03:33:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:07,129 INFO L495 AbstractCegarLoop]: Abstraction has 29376 states and 40882 transitions. [2022-11-03 03:33:07,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:33:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 29376 states and 40882 transitions. [2022-11-03 03:33:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 03:33:07,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:07,141 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 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] [2022-11-03 03:33:07,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:33:07,141 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:07,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash 747889871, now seen corresponding path program 1 times [2022-11-03 03:33:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:07,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637109422] [2022-11-03 03:33:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:07,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-03 03:33:07,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:07,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637109422] [2022-11-03 03:33:07,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637109422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:07,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892476345] [2022-11-03 03:33:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:07,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:07,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:07,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:07,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eea8a97-2102-4bda-9af3-c4c900ab450f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:33:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:09,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 3789 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:33:09,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-03 03:33:09,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:33:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 03:33:10,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892476345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:33:10,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2055757169] [2022-11-03 03:33:10,115 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-11-03 03:33:10,115 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:33:10,119 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:33:10,125 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:33:10,126 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:33:15,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:16,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:16,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:16,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:16,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:20,219 INFO L244 Elim1Store]: Index analysis took 5278 ms