./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.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_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/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_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/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_baa3a88d-4593-4622-8406-3549c122b83b/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 c5e008b04b7be5a7eb3cfb5abbdeca875ac459e6636eb5b98613fa9fcb2277a8 --- 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 03:33:25,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:33:25,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:33:25,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:33:25,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:33:25,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:33:25,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:33:25,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:33:25,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:33:25,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:33:25,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:33:25,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:33:25,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:33:25,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:33:25,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:33:25,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:33:25,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:33:25,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:33:25,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:33:25,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:33:25,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:33:25,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:33:25,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:33:25,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:33:25,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:33:25,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:33:25,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:33:25,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:33:25,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:33:25,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:33:25,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:33:25,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:33:25,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:33:25,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:33:25,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:33:25,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:33:25,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:33:25,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:33:25,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:33:25,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:33:25,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:33:25,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:33:25,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:33:25,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:33:25,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:33:25,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:33:25,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:33:25,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:33:25,127 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:33:25,128 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:33:25,128 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:33:25,129 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:33:25,129 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:33:25,129 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:33:25,130 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:33:25,130 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:33:25,130 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:33:25,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:33:25,131 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:33:25,131 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:33:25,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:33:25,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:33:25,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:33:25,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:33:25,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:33:25,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:33:25,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:33:25,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:33:25,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:33:25,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:33:25,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:33:25,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:25,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:33:25,136 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:33:25,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:33:25,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:33:25,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:33:25,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:33:25,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:33:25,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:33:25,138 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_baa3a88d-4593-4622-8406-3549c122b83b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e008b04b7be5a7eb3cfb5abbdeca875ac459e6636eb5b98613fa9fcb2277a8 [2022-11-03 03:33:25,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:33:25,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:33:25,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:33:25,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:33:25,582 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:33:25,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-03 03:33:25,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/data/e68ba7613/c1d30da984aa430ca51f81e42bb8ad6d/FLAGf7ec410c7 [2022-11-03 03:33:26,994 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:33:26,996 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-03 03:33:27,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/data/e68ba7613/c1d30da984aa430ca51f81e42bb8ad6d/FLAGf7ec410c7 [2022-11-03 03:33:27,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/data/e68ba7613/c1d30da984aa430ca51f81e42bb8ad6d [2022-11-03 03:33:27,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:33:27,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:33:27,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:27,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:33:27,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:33:27,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:27" (1/1) ... [2022-11-03 03:33:27,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432dae3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:27, skipping insertion in model container [2022-11-03 03:33:27,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:27" (1/1) ... [2022-11-03 03:33:27,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:33:27,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:33:29,427 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_baa3a88d-4593-4622-8406-3549c122b83b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i[204422,204435] [2022-11-03 03:33:32,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:32,229 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:33:32,459 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_baa3a88d-4593-4622-8406-3549c122b83b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i[204422,204435] [2022-11-03 03:33:32,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:33,311 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:33:33,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33 WrapperNode [2022-11-03 03:33:33,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:33,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:33,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:33:33,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:33:33,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:33,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,076 INFO L138 Inliner]: procedures = 423, calls = 5945, calls flagged for inlining = 205, calls inlined = 187, statements flattened = 11335 [2022-11-03 03:33:34,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:34,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:33:34,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:33:34,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:33:34,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:33:34,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:33:34,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:33:34,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:33:34,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (1/1) ... [2022-11-03 03:33:34,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:34,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:34,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:33:34,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baa3a88d-4593-4622-8406-3549c122b83b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:33:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:33:34,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:33:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:33:34,933 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:33:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_vfta [2022-11-03 03:33:34,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_vfta [2022-11-03 03:33:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:33:34,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:33:34,933 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_standby_eeprom [2022-11-03 03:33:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_standby_eeprom [2022-11-03 03:33:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_error_detected [2022-11-03 03:33:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_error_detected [2022-11-03 03:33:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 03:33:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 03:33:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:33:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:33:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 03:33:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 03:33:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:33:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:33:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_alloc_rx_buffers [2022-11-03 03:33:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_alloc_rx_buffers [2022-11-03 03:33:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure mac_addr_valid [2022-11-03 03:33:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_addr_valid [2022-11-03 03:33:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_add_vid [2022-11-03 03:33:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_add_vid [2022-11-03 03:33:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_tx_resources [2022-11-03 03:33:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_tx_resources [2022-11-03 03:33:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 03:33:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 03:33:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_features [2022-11-03 03:33:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_features [2022-11-03 03:33:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_multi [2022-11-03 03:33:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_multi [2022-11-03 03:33:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_rar_set [2022-11-03 03:33:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_rar_set [2022-11-03 03:33:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:33:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:33:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:33:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:33:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 03:33:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 03:33:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:33:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:33:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 03:33:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:33:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:33:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:33:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_eeprom_checksum [2022-11-03 03:33:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_eeprom_checksum [2022-11-03 03:33:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:33:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:33:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_netpoll [2022-11-03 03:33:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_netpoll [2022-11-03 03:33:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:33:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:33:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:33:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_raise_clock [2022-11-03 03:33:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_raise_clock [2022-11-03 03:33:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_eeprom [2022-11-03 03:33:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_eeprom [2022-11-03 03:33:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:33:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:33:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_identify_xpak_vendor [2022-11-03 03:33:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_identify_xpak_vendor [2022-11-03 03:33:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:33:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_mac_reset [2022-11-03 03:33:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_mac_reset [2022-11-03 03:33:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_2 [2022-11-03 03:33:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_2 [2022-11-03 03:33:34,952 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_eeprom [2022-11-03 03:33:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_eeprom [2022-11-03 03:33:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:33:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_rx_resources [2022-11-03 03:33:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_rx_resources [2022-11-03 03:33:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:33:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:33:34,954 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-03 03:33:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-03 03:33:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-03 03:33:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-03 03:33:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:33:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:33:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 03:33:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 03:33:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_regs_len [2022-11-03 03:33:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_regs_len [2022-11-03 03:33:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 03:33:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 03:33:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:33:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:33:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_phy_reg [2022-11-03 03:33:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_phy_reg [2022-11-03 03:33:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-11-03 03:33:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_for_link [2022-11-03 03:33:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_for_link [2022-11-03 03:33:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_option [2022-11-03 03:33:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_option [2022-11-03 03:33:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:33:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 03:33:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 03:33:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:33:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 03:33:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 03:33:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:33:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:33:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:33:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-03 03:33:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-03 03:33:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_lower_clock [2022-11-03 03:33:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_lower_clock [2022-11-03 03:33:34,967 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_reset [2022-11-03 03:33:34,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_reset [2022-11-03 03:33:34,968 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 03:33:34,968 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 03:33:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_len [2022-11-03 03:33:34,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_len [2022-11-03 03:33:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_up [2022-11-03 03:33:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_up [2022-11-03 03:33:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_irq_enable [2022-11-03 03:33:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_irq_enable [2022-11-03 03:33:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 03:33:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 03:33:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:33:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:33:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_tx_resources [2022-11-03 03:33:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_tx_resources [2022-11-03 03:33:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_maybe_stop_tx [2022-11-03 03:33:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_maybe_stop_tx [2022-11-03 03:33:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_intr [2022-11-03 03:33:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_intr [2022-11-03 03:33:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 03:33:34,978 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 03:33:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:33:34,978 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:33:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:33:35,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:33:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-03 03:33:35,113 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-03 03:33:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 03:33:35,113 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 03:33:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:33:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:33:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:33:35,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:33:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:33:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:33:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:33:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:33:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 03:33:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 03:33:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_update_stats [2022-11-03 03:33:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_update_stats [2022-11-03 03:33:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_6 [2022-11-03 03:33:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_6 [2022-11-03 03:33:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:33:35,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:33:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_and_get_eeprom_data [2022-11-03 03:33:35,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_and_get_eeprom_data [2022-11-03 03:33:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 03:33:35,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 03:33:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:33:35,115 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:33:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:33:35,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:33:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:33:35,116 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:33:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-03 03:33:35,116 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-03 03:33:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 03:33:35,116 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 03:33:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 03:33:35,116 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 03:33:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 03:33:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 03:33:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:33:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 03:33:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 03:33:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 03:33:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 03:33:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:33:35,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 03:33:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 03:33:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_kill_vid [2022-11-03 03:33:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_kill_vid [2022-11-03 03:33:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 03:33:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 03:33:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:33:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_change_mtu [2022-11-03 03:33:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_change_mtu [2022-11-03 03:33:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 03:33:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 03:33:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:33:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:33:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:33:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:33:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_link_reset [2022-11-03 03:33:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_link_reset [2022-11-03 03:33:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_speed_duplex [2022-11-03 03:33:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_speed_duplex [2022-11-03 03:33:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_fix_features [2022-11-03 03:33:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_fix_features [2022-11-03 03:33:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 03:33:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 03:33:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:33:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:33:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_slot_reset [2022-11-03 03:33:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_slot_reset [2022-11-03 03:33:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-03 03:33:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-03 03:33:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-03 03:33:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-03 03:33:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:33:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:33:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_unmap_and_free_tx_resource [2022-11-03 03:33:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_unmap_and_free_tx_resource [2022-11-03 03:33:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-03 03:33:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-03 03:33:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:33:35,124 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:33:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_mac [2022-11-03 03:33:35,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_mac [2022-11-03 03:33:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:33:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_eeprom [2022-11-03 03:33:35,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_eeprom [2022-11-03 03:33:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:33:35,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:33:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_phy_reg [2022-11-03 03:33:35,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_phy_reg [2022-11-03 03:33:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 03:33:35,125 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 03:33:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_ee_mac_addr [2022-11-03 03:33:35,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_ee_mac_addr [2022-11-03 03:33:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 03:33:35,125 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 03:33:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-03 03:33:35,126 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-03 03:33:35,127 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_tx_ring [2022-11-03 03:33:35,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_tx_ring [2022-11-03 03:33:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2022-11-03 03:33:35,132 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2022-11-03 03:33:35,133 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 03:33:35,133 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 03:33:35,133 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_rx_ring [2022-11-03 03:33:35,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_rx_ring [2022-11-03 03:33:35,133 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_shift_out_bits [2022-11-03 03:33:35,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_shift_out_bits [2022-11-03 03:33:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_down [2022-11-03 03:33:35,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_down [2022-11-03 03:33:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 03:33:35,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 03:33:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_tx_timeout [2022-11-03 03:33:35,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_tx_timeout [2022-11-03 03:33:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_rx_resources [2022-11-03 03:33:35,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_rx_resources [2022-11-03 03:33:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 03:33:35,138 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 03:33:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:33:35,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:33:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_stats [2022-11-03 03:33:35,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_stats [2022-11-03 03:33:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-03 03:33:35,139 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-03 03:33:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-03 03:33:35,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-03 03:33:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 03:33:35,139 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 03:33:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:33:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 03:33:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_data [2022-11-03 03:33:35,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_data [2022-11-03 03:33:36,641 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:33:36,655 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:33:37,111 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:34:11,468 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:34:15,317 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:34:15,317 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 03:34:15,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:15 BoogieIcfgContainer [2022-11-03 03:34:15,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:34:15,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:34:15,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:34:15,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:34:15,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:33:27" (1/3) ... [2022-11-03 03:34:15,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4115d3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:15, skipping insertion in model container [2022-11-03 03:34:15,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:33" (2/3) ... [2022-11-03 03:34:15,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4115d3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:34:15, skipping insertion in model container [2022-11-03 03:34:15,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:34:15" (3/3) ... [2022-11-03 03:34:15,337 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-03 03:34:15,361 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:34:15,361 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:34:15,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:34:15,494 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;@1df0973a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:34:15,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:34:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 2485 states, 1489 states have (on average 1.2733378106111484) internal successors, (1896), 1524 states have internal predecessors, (1896), 869 states have call successors, (869), 126 states have call predecessors, (869), 125 states have return successors, (861), 856 states have call predecessors, (861), 861 states have call successors, (861) [2022-11-03 03:34:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 03:34:15,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:15,525 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:15,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2021436431, now seen corresponding path program 1 times [2022-11-03 03:34:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:15,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231946024] [2022-11-03 03:34:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 03:34:17,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:17,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231946024] [2022-11-03 03:34:17,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231946024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:17,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:17,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:17,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527412945] [2022-11-03 03:34:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:17,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:17,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:17,212 INFO L87 Difference]: Start difference. First operand has 2485 states, 1489 states have (on average 1.2733378106111484) internal successors, (1896), 1524 states have internal predecessors, (1896), 869 states have call successors, (869), 126 states have call predecessors, (869), 125 states have return successors, (861), 856 states have call predecessors, (861), 861 states have call successors, (861) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 03:34:19,782 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 03:34:26,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:29,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:34,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:36,740 WARN L539 Checker$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 03:34:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:36,924 INFO L93 Difference]: Finished difference Result 7199 states and 10545 transitions. [2022-11-03 03:34:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:36,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 56 [2022-11-03 03:34:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:36,993 INFO L225 Difference]: With dead ends: 7199 [2022-11-03 03:34:36,994 INFO L226 Difference]: Without dead ends: 4666 [2022-11-03 03:34:37,018 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 03:34:37,022 INFO L413 NwaCegarLoop]: 4099 mSDtfsCounter, 3253 mSDsluCounter, 3606 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3261 SdHoareTripleChecker+Valid, 7367 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:37,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3261 Valid, 7367 Invalid, 703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 692 Invalid, 4 Unknown, 0 Unchecked, 19.1s Time] [2022-11-03 03:34:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2022-11-03 03:34:37,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4663. [2022-11-03 03:34:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 2798 states have (on average 1.2598284488920657) internal successors, (3525), 2848 states have internal predecessors, (3525), 1616 states have call successors, (1616), 249 states have call predecessors, (1616), 248 states have return successors, (1623), 1602 states have call predecessors, (1623), 1615 states have call successors, (1623) [2022-11-03 03:34:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 6764 transitions. [2022-11-03 03:34:37,701 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 6764 transitions. Word has length 56 [2022-11-03 03:34:37,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:37,702 INFO L495 AbstractCegarLoop]: Abstraction has 4663 states and 6764 transitions. [2022-11-03 03:34:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 03:34:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 6764 transitions. [2022-11-03 03:34:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 03:34:37,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:37,715 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:34:37,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash -541387840, now seen corresponding path program 1 times [2022-11-03 03:34:37,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:37,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389468228] [2022-11-03 03:34:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 03:34:39,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:39,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389468228] [2022-11-03 03:34:39,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389468228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:39,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:39,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:34:39,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629729235] [2022-11-03 03:34:39,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:39,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:34:39,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:34:39,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:34:39,408 INFO L87 Difference]: Start difference. First operand 4663 states and 6764 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:34:41,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:51,181 WARN L539 Checker$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 03:34:57,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:01,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:02,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:02,779 INFO L93 Difference]: Finished difference Result 9281 states and 13498 transitions. [2022-11-03 03:35:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:35:02,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-11-03 03:35:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:02,873 INFO L225 Difference]: With dead ends: 9281 [2022-11-03 03:35:02,873 INFO L226 Difference]: Without dead ends: 9276 [2022-11-03 03:35:02,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:35:02,887 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 3475 mSDsluCounter, 8017 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 11464 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:02,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 11464 Invalid, 1043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1040 Invalid, 3 Unknown, 0 Unchecked, 22.9s Time] [2022-11-03 03:35:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2022-11-03 03:35:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 9268. [2022-11-03 03:35:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 5559 states have (on average 1.2597589494513401) internal successors, (7003), 5658 states have internal predecessors, (7003), 3212 states have call successors, (3212), 497 states have call predecessors, (3212), 496 states have return successors, (3267), 3183 states have call predecessors, (3267), 3211 states have call successors, (3267) [2022-11-03 03:35:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 13482 transitions. [2022-11-03 03:35:03,880 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 13482 transitions. Word has length 58 [2022-11-03 03:35:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:03,881 INFO L495 AbstractCegarLoop]: Abstraction has 9268 states and 13482 transitions. [2022-11-03 03:35:03,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:35:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 13482 transitions. [2022-11-03 03:35:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-03 03:35:03,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:03,904 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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] [2022-11-03 03:35:03,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:35:03,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash -875248086, now seen corresponding path program 1 times [2022-11-03 03:35:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:03,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880098741] [2022-11-03 03:35:03,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:03,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-03 03:35:05,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880098741] [2022-11-03 03:35:05,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880098741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:05,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:05,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588863316] [2022-11-03 03:35:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:05,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:05,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:05,080 INFO L87 Difference]: Start difference. First operand 9268 states and 13482 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:35:07,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:08,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:17,593 WARN L539 Checker$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 03:35:20,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:23,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:24,000 INFO L93 Difference]: Finished difference Result 26332 states and 38143 transitions. [2022-11-03 03:35:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:24,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 142 [2022-11-03 03:35:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:24,145 INFO L225 Difference]: With dead ends: 26332 [2022-11-03 03:35:24,145 INFO L226 Difference]: Without dead ends: 17081 [2022-11-03 03:35:24,227 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 03:35:24,232 INFO L413 NwaCegarLoop]: 3926 mSDtfsCounter, 2918 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2918 SdHoareTripleChecker+Valid, 7095 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:24,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2918 Valid, 7095 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 726 Invalid, 3 Unknown, 0 Unchecked, 18.2s Time] [2022-11-03 03:35:24,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17081 states. [2022-11-03 03:35:26,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17081 to 17074. [2022-11-03 03:35:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17074 states, 10245 states have (on average 1.2555392874572961) internal successors, (12863), 10424 states have internal predecessors, (12863), 5856 states have call successors, (5856), 973 states have call predecessors, (5856), 972 states have return successors, (5957), 5811 states have call predecessors, (5957), 5855 states have call successors, (5957) [2022-11-03 03:35:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17074 states to 17074 states and 24676 transitions. [2022-11-03 03:35:26,158 INFO L78 Accepts]: Start accepts. Automaton has 17074 states and 24676 transitions. Word has length 142 [2022-11-03 03:35:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:26,159 INFO L495 AbstractCegarLoop]: Abstraction has 17074 states and 24676 transitions. [2022-11-03 03:35:26,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:35:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 17074 states and 24676 transitions. [2022-11-03 03:35:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-03 03:35:26,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:26,208 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:26,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:35:26,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1476059539, now seen corresponding path program 1 times [2022-11-03 03:35:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:26,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348891910] [2022-11-03 03:35:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:26,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2022-11-03 03:35:28,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:28,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348891910] [2022-11-03 03:35:28,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348891910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:28,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:28,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:35:28,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51837493] [2022-11-03 03:35:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:35:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:28,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:35:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:35:28,071 INFO L87 Difference]: Start difference. First operand 17074 states and 24676 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:35:30,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:38,457 WARN L539 Checker$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 03:35:43,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:47,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:51,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:51,516 INFO L93 Difference]: Finished difference Result 34131 states and 49406 transitions. [2022-11-03 03:35:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:35:51,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2022-11-03 03:35:51,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:51,741 INFO L225 Difference]: With dead ends: 34131 [2022-11-03 03:35:51,741 INFO L226 Difference]: Without dead ends: 34126 [2022-11-03 03:35:51,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:35:51,769 INFO L413 NwaCegarLoop]: 4091 mSDtfsCounter, 3458 mSDsluCounter, 7981 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 11401 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:51,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3458 Valid, 11401 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1029 Invalid, 4 Unknown, 0 Unchecked, 22.6s Time] [2022-11-03 03:35:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34126 states. [2022-11-03 03:35:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34126 to 34105. [2022-11-03 03:35:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34105 states, 20457 states have (on average 1.2555604438578483) internal successors, (25685), 20824 states have internal predecessors, (25685), 11703 states have call successors, (11703), 1945 states have call predecessors, (11703), 1944 states have return successors, (11985), 11605 states have call predecessors, (11985), 11702 states have call successors, (11985) [2022-11-03 03:35:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34105 states to 34105 states and 49373 transitions. [2022-11-03 03:35:55,375 INFO L78 Accepts]: Start accepts. Automaton has 34105 states and 49373 transitions. Word has length 195 [2022-11-03 03:35:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:55,377 INFO L495 AbstractCegarLoop]: Abstraction has 34105 states and 49373 transitions. [2022-11-03 03:35:55,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:35:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 34105 states and 49373 transitions. [2022-11-03 03:35:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-03 03:35:55,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:55,439 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:35:55,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 386867301, now seen corresponding path program 1 times [2022-11-03 03:35:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:55,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029977128] [2022-11-03 03:35:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-11-03 03:35:56,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:56,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029977128] [2022-11-03 03:35:56,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029977128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:56,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:56,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815877808] [2022-11-03 03:35:56,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:56,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:56,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:56,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:56,679 INFO L87 Difference]: Start difference. First operand 34105 states and 49373 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 03:35:57,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:01,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:08,728 WARN L539 Checker$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 03:36:12,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:14,417 INFO L93 Difference]: Finished difference Result 100777 states and 145668 transitions. [2022-11-03 03:36:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:14,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 287 [2022-11-03 03:36:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:14,814 INFO L225 Difference]: With dead ends: 100777 [2022-11-03 03:36:14,815 INFO L226 Difference]: Without dead ends: 66689 [2022-11-03 03:36:15,000 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 03:36:15,001 INFO L413 NwaCegarLoop]: 4314 mSDtfsCounter, 3360 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:15,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3360 Valid, 7477 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 733 Invalid, 2 Unknown, 0 Unchecked, 15.6s Time] [2022-11-03 03:36:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66689 states. [2022-11-03 03:36:18,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66689 to 66677. [2022-11-03 03:36:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66677 states, 39961 states have (on average 1.2521458421961413) internal successors, (50037), 40680 states have internal predecessors, (50037), 22875 states have call successors, (22875), 3841 states have call predecessors, (22875), 3840 states have return successors, (23381), 22673 states have call predecessors, (23381), 22874 states have call successors, (23381) [2022-11-03 03:36:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66677 states to 66677 states and 96293 transitions. [2022-11-03 03:36:19,439 INFO L78 Accepts]: Start accepts. Automaton has 66677 states and 96293 transitions. Word has length 287 [2022-11-03 03:36:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:19,440 INFO L495 AbstractCegarLoop]: Abstraction has 66677 states and 96293 transitions. [2022-11-03 03:36:19,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 03:36:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 66677 states and 96293 transitions. [2022-11-03 03:36:20,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 03:36:20,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:20,030 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:20,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:36:20,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:20,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:20,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1103188673, now seen corresponding path program 1 times [2022-11-03 03:36:20,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:20,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044779721] [2022-11-03 03:36:20,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:20,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-03 03:36:20,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044779721] [2022-11-03 03:36:20,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044779721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:20,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:20,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:20,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908496200] [2022-11-03 03:36:20,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:20,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:20,970 INFO L87 Difference]: Start difference. First operand 66677 states and 96293 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 03:36:24,188 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 03:36:31,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:33,772 WARN L539 Checker$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 03:36:37,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:39,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:43,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:46,333 WARN L539 Checker$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 03:36:47,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:47,811 INFO L93 Difference]: Finished difference Result 176747 states and 254362 transitions. [2022-11-03 03:36:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:47,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 298 [2022-11-03 03:36:47,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:48,793 INFO L225 Difference]: With dead ends: 176747 [2022-11-03 03:36:48,793 INFO L226 Difference]: Without dead ends: 110087 [2022-11-03 03:36:49,195 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 03:36:49,197 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 2716 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 7529 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:49,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 7529 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 852 Invalid, 2 Unknown, 0 Unchecked, 22.8s Time] [2022-11-03 03:36:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110087 states. [2022-11-03 03:36:56,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110087 to 109887. [2022-11-03 03:36:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109887 states, 65379 states have (on average 1.2409642239862952) internal successors, (81133), 66578 states have internal predecessors, (81133), 38011 states have call successors, (38011), 6497 states have call predecessors, (38011), 6496 states have return successors, (38687), 37569 states have call predecessors, (38687), 38010 states have call successors, (38687) [2022-11-03 03:36:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109887 states to 109887 states and 157831 transitions. [2022-11-03 03:36:57,961 INFO L78 Accepts]: Start accepts. Automaton has 109887 states and 157831 transitions. Word has length 298 [2022-11-03 03:36:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:57,962 INFO L495 AbstractCegarLoop]: Abstraction has 109887 states and 157831 transitions. [2022-11-03 03:36:57,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 03:36:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 109887 states and 157831 transitions. [2022-11-03 03:36:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-03 03:36:58,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:58,184 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:36:58,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1727286421, now seen corresponding path program 1 times [2022-11-03 03:36:58,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:58,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354653336] [2022-11-03 03:36:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:58,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:59,522 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2022-11-03 03:36:59,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:59,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354653336] [2022-11-03 03:36:59,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354653336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:59,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:59,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692163410] [2022-11-03 03:36:59,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:59,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:59,526 INFO L87 Difference]: Start difference. First operand 109887 states and 157831 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-03 03:37:01,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:03,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:12,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:14,377 WARN L539 Checker$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 03:37:16,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:21,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:24,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:28,748 WARN L539 Checker$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 03:37:31,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:31,760 INFO L93 Difference]: Finished difference Result 275917 states and 396473 transitions. [2022-11-03 03:37:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:37:31,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 338 [2022-11-03 03:37:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:33,134 INFO L225 Difference]: With dead ends: 275917 [2022-11-03 03:37:33,135 INFO L226 Difference]: Without dead ends: 166047 [2022-11-03 03:37:33,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:37:33,500 INFO L413 NwaCegarLoop]: 6196 mSDtfsCounter, 3463 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 9375 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:33,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 9375 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1029 Invalid, 4 Unknown, 0 Unchecked, 25.5s Time] [2022-11-03 03:37:33,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166047 states. [2022-11-03 03:37:44,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166047 to 166033. [2022-11-03 03:37:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166033 states, 98863 states have (on average 1.2398672910998048) internal successors, (122577), 100690 states have internal predecessors, (122577), 57373 states have call successors, (57373), 9797 states have call predecessors, (57373), 9796 states have return successors, (58384), 56701 states have call predecessors, (58384), 57372 states have call successors, (58384) [2022-11-03 03:37:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166033 states to 166033 states and 238334 transitions. [2022-11-03 03:37:46,342 INFO L78 Accepts]: Start accepts. Automaton has 166033 states and 238334 transitions. Word has length 338 [2022-11-03 03:37:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 166033 states and 238334 transitions. [2022-11-03 03:37:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-03 03:37:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 166033 states and 238334 transitions. [2022-11-03 03:37:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-03 03:37:46,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:46,587 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:46,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:37:46,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:46,589 INFO L85 PathProgramCache]: Analyzing trace with hash -888385429, now seen corresponding path program 1 times [2022-11-03 03:37:46,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:46,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912513926] [2022-11-03 03:37:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:46,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat