./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/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_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/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_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/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 dfd6d574d08999b62054724022525ae58fcf8eb53291450098ab652e14e39cce --- 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 03:53:52,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:53:52,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:53:52,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:53:52,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:53:52,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:53:52,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:53:52,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:53:52,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:53:52,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:53:52,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:53:52,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:53:52,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:53:52,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:53:52,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:53:52,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:53:52,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:53:52,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:53:52,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:53:52,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:53:52,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:53:52,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:53:52,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:53:52,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:53:52,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:53:52,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:53:52,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:53:52,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:53:52,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:53:52,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:53:52,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:53:52,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:53:52,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:53:52,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:53:52,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:53:52,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:53:52,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:53:52,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:53:52,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:53:52,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:53:52,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:53:52,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:53:52,549 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:53:52,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:53:52,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:53:52,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:53:52,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:53:52,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:53:52,553 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:53:52,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:53:52,554 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:53:52,554 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:53:52,554 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:53:52,555 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:53:52,555 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:53:52,556 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:53:52,556 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:53:52,557 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:53:52,557 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:53:52,558 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:53:52,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:53:52,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:53:52,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:53:52,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:53:52,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:53:52,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:53:52,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:53:52,561 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:53:52,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:53:52,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:53:52,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:53:52,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:53:52,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:53:52,564 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:53:52,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:53:52,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:53:52,565 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:53:52,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:53:52,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:53:52,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:53:52,566 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_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd6d574d08999b62054724022525ae58fcf8eb53291450098ab652e14e39cce [2022-11-03 03:53:52,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:53:52,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:53:52,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:53:52,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:53:52,975 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:53:52,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2022-11-03 03:53:53,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/data/86bae35bf/f0e65a1cf2c94018b707c92a26d2efd6/FLAG1ed100a33 [2022-11-03 03:53:54,510 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:53:54,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2022-11-03 03:53:54,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/data/86bae35bf/f0e65a1cf2c94018b707c92a26d2efd6/FLAG1ed100a33 [2022-11-03 03:53:55,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/data/86bae35bf/f0e65a1cf2c94018b707c92a26d2efd6 [2022-11-03 03:53:55,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:53:55,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:53:55,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:53:55,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:53:55,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:53:55,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2554b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55, skipping insertion in model container [2022-11-03 03:53:55,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:53:55,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:54:01,402 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_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[479141,479154] [2022-11-03 03:54:01,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:54:02,055 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:54:02,722 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_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[479141,479154] [2022-11-03 03:54:02,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:54:03,292 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:54:03,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03 WrapperNode [2022-11-03 03:54:03,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:54:03,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:54:03,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:54:03,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:54:03,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:03,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:03,920 INFO L138 Inliner]: procedures = 606, calls = 6407, calls flagged for inlining = 203, calls inlined = 162, statements flattened = 7657 [2022-11-03 03:54:03,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:54:03,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:54:03,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:54:03,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:54:03,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:03,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:04,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:04,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:04,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:04,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:04,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:04,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:04,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:54:04,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:54:04,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:54:04,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:54:04,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (1/1) ... [2022-11-03 03:54:04,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:54:04,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:04,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:54:04,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:54:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2022-11-03 03:54:04,882 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2022-11-03 03:54:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2022-11-03 03:54:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2022-11-03 03:54:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_5 [2022-11-03 03:54:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_5 [2022-11-03 03:54:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 03:54:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:54:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:54:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:54:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:54:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2022-11-03 03:54:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2022-11-03 03:54:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:54:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:54:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:54:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:54:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2022-11-03 03:54:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2022-11-03 03:54:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-03 03:54:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-03 03:54:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:54:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:54:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 03:54:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 03:54:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:54:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:54:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2022-11-03 03:54:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2022-11-03 03:54:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2022-11-03 03:54:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2022-11-03 03:54:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2022-11-03 03:54:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2022-11-03 03:54:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:54:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:54:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:54:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:54:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:54:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:54:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2022-11-03 03:54:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2022-11-03 03:54:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:54:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:54:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 03:54:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 03:54:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:54:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 03:54:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 03:54:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:54:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:54:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-03 03:54:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-03 03:54:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2022-11-03 03:54:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2022-11-03 03:54:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:54:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:54:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 03:54:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 03:54:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:54:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2022-11-03 03:54:04,933 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2022-11-03 03:54:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:54:04,933 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:54:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-03 03:54:04,934 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-03 03:54:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:54:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:54:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:54:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:54:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:54:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:54:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_set_mac_address [2022-11-03 03:54:04,936 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_set_mac_address [2022-11-03 03:54:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2022-11-03 03:54:04,936 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2022-11-03 03:54:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:54:04,937 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:54:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:54:04,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:54:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:54:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:54:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:54:04,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:54:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:54:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:54:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:54:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:54:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 03:54:04,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 03:54:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 03:54:04,940 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 03:54:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:54:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:54:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-03 03:54:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-03 03:54:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:54:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:54:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 03:54:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 03:54:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-11-03 03:54:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-11-03 03:54:04,943 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-03 03:54:04,943 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-03 03:54:04,943 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 03:54:04,943 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 03:54:04,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:54:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:54:04,944 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 03:54:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 03:54:04,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 03:54:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 03:54:04,945 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2022-11-03 03:54:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2022-11-03 03:54:04,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:54:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:54:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:54:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:54:04,946 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 03:54:04,947 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 03:54:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:54:04,952 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:54:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:54:04,952 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:54:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 03:54:04,953 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 03:54:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2022-11-03 03:54:04,953 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2022-11-03 03:54:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2022-11-03 03:54:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2022-11-03 03:54:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2022-11-03 03:54:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2022-11-03 03:54:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:54:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:54:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:54:04,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:54:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 03:54:04,955 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 03:54:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:54:04,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:54:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:54:04,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:54:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:54:04,957 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:54:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 03:54:04,957 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 03:54:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 03:54:04,958 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 03:54:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 03:54:04,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 03:54:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:54:04,958 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:54:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 03:54:04,972 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 03:54:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:54:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:54:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:54:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2022-11-03 03:54:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2022-11-03 03:54:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:54:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-03 03:54:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-03 03:54:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-03 03:54:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-03 03:54:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-03 03:54:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-03 03:54:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:54:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 03:54:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 03:54:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 03:54:04,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 03:54:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:54:04,976 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:54:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 03:54:04,977 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 03:54:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-03 03:54:04,977 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-03 03:54:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:54:04,977 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:54:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:54:04,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:54:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2022-11-03 03:54:04,978 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2022-11-03 03:54:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2022-11-03 03:54:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2022-11-03 03:54:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 03:54:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 03:54:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-03 03:54:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-03 03:54:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 03:54:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 03:54:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2022-11-03 03:54:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2022-11-03 03:54:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 03:54:04,981 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 03:54:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single___1 [2022-11-03 03:54:04,981 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single___1 [2022-11-03 03:54:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:54:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:54:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2022-11-03 03:54:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2022-11-03 03:54:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2022-11-03 03:54:04,983 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2022-11-03 03:54:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:54:04,983 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:54:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2022-11-03 03:54:04,983 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2022-11-03 03:54:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mgmt_lock_of_NOT_ARG_SIGN [2022-11-03 03:54:04,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mgmt_lock_of_NOT_ARG_SIGN [2022-11-03 03:54:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:54:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-03 03:54:04,984 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-03 03:54:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_stats_lock_of_NOT_ARG_SIGN [2022-11-03 03:54:04,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_stats_lock_of_NOT_ARG_SIGN [2022-11-03 03:54:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-03 03:54:04,985 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-03 03:54:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:54:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:54:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2022-11-03 03:54:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2022-11-03 03:54:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_islpci_acl [2022-11-03 03:54:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_islpci_acl [2022-11-03 03:54:04,987 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2022-11-03 03:54:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2022-11-03 03:54:04,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:54:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:54:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 03:54:05,001 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 03:54:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 03:54:05,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 03:54:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2022-11-03 03:54:05,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2022-11-03 03:54:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-03 03:54:05,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-03 03:54:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:54:05,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:54:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_5 [2022-11-03 03:54:05,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_5 [2022-11-03 03:54:05,004 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 03:54:05,004 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 03:54:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-03 03:54:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-03 03:54:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2022-11-03 03:54:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2022-11-03 03:54:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_islpci_acl [2022-11-03 03:54:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_islpci_acl [2022-11-03 03:54:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single___0 [2022-11-03 03:54:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single___0 [2022-11-03 03:54:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 03:54:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 03:54:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 03:54:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 03:54:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:54:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 03:54:05,007 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 03:54:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2022-11-03 03:54:05,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2022-11-03 03:54:06,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:54:06,370 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:54:07,060 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:54:17,447 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:54:19,076 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:54:19,076 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:54:19,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:19 BoogieIcfgContainer [2022-11-03 03:54:19,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:54:19,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:54:19,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:54:19,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:54:19,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:53:55" (1/3) ... [2022-11-03 03:54:19,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7678969b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:19, skipping insertion in model container [2022-11-03 03:54:19,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:03" (2/3) ... [2022-11-03 03:54:19,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7678969b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:19, skipping insertion in model container [2022-11-03 03:54:19,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:19" (3/3) ... [2022-11-03 03:54:19,097 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2022-11-03 03:54:19,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:54:19,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:54:19,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:54:19,278 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;@50d36d46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:54:19,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:54:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 1560 states, 961 states have (on average 1.3350676378772113) internal successors, (1283), 1001 states have internal predecessors, (1283), 479 states have call successors, (479), 119 states have call predecessors, (479), 118 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) [2022-11-03 03:54:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:54:19,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:19,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:19,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1432806380, now seen corresponding path program 1 times [2022-11-03 03:54:19,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:19,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763408182] [2022-11-03 03:54:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:19,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:21,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:21,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763408182] [2022-11-03 03:54:21,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763408182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:21,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:21,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956494644] [2022-11-03 03:54:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:21,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:21,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:21,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:21,253 INFO L87 Difference]: Start difference. First operand has 1560 states, 961 states have (on average 1.3350676378772113) internal successors, (1283), 1001 states have internal predecessors, (1283), 479 states have call successors, (479), 119 states have call predecessors, (479), 118 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-03 03:54:25,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:26,782 INFO L93 Difference]: Finished difference Result 4648 states and 6718 transitions. [2022-11-03 03:54:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:26,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 38 [2022-11-03 03:54:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:26,844 INFO L225 Difference]: With dead ends: 4648 [2022-11-03 03:54:26,844 INFO L226 Difference]: Without dead ends: 3017 [2022-11-03 03:54:26,864 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 03:54:26,869 INFO L413 NwaCegarLoop]: 2448 mSDtfsCounter, 2172 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 4421 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:26,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 4421 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 03:54:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-11-03 03:54:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 3009. [2022-11-03 03:54:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 1848 states have (on average 1.300865800865801) internal successors, (2404), 1896 states have internal predecessors, (2404), 926 states have call successors, (926), 235 states have call predecessors, (926), 234 states have return successors, (913), 909 states have call predecessors, (913), 913 states have call successors, (913) [2022-11-03 03:54:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 4243 transitions. [2022-11-03 03:54:27,231 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 4243 transitions. Word has length 38 [2022-11-03 03:54:27,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:27,232 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 4243 transitions. [2022-11-03 03:54:27,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-03 03:54:27,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 4243 transitions. [2022-11-03 03:54:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 03:54:27,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:27,249 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:54:27,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:54:27,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1421047792, now seen corresponding path program 1 times [2022-11-03 03:54:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:27,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941718772] [2022-11-03 03:54:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:27,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:54:28,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:28,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941718772] [2022-11-03 03:54:28,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941718772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:28,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:28,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385549020] [2022-11-03 03:54:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:28,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:28,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:28,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:28,268 INFO L87 Difference]: Start difference. First operand 3009 states and 4243 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:30,458 INFO L93 Difference]: Finished difference Result 3011 states and 4244 transitions. [2022-11-03 03:54:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:30,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2022-11-03 03:54:30,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:30,483 INFO L225 Difference]: With dead ends: 3011 [2022-11-03 03:54:30,484 INFO L226 Difference]: Without dead ends: 3008 [2022-11-03 03:54:30,491 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 03:54:30,492 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 2119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:30,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 1904 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 03:54:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-11-03 03:54:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-11-03 03:54:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 1848 states have (on average 1.3003246753246753) internal successors, (2403), 1895 states have internal predecessors, (2403), 925 states have call successors, (925), 235 states have call predecessors, (925), 234 states have return successors, (913), 909 states have call predecessors, (913), 913 states have call successors, (913) [2022-11-03 03:54:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4241 transitions. [2022-11-03 03:54:30,740 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4241 transitions. Word has length 52 [2022-11-03 03:54:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:30,741 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4241 transitions. [2022-11-03 03:54:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4241 transitions. [2022-11-03 03:54:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 03:54:30,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:30,748 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:54:30,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:54:30,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:30,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1101948917, now seen corresponding path program 1 times [2022-11-03 03:54:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:30,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850966449] [2022-11-03 03:54:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:30,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:54:31,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:31,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850966449] [2022-11-03 03:54:31,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850966449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:31,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:31,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:31,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128540258] [2022-11-03 03:54:31,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:31,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:31,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:31,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:31,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:31,629 INFO L87 Difference]: Start difference. First operand 3008 states and 4241 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:33,718 INFO L93 Difference]: Finished difference Result 3010 states and 4242 transitions. [2022-11-03 03:54:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:33,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-11-03 03:54:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:33,753 INFO L225 Difference]: With dead ends: 3010 [2022-11-03 03:54:33,753 INFO L226 Difference]: Without dead ends: 3007 [2022-11-03 03:54:33,756 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 03:54:33,761 INFO L413 NwaCegarLoop]: 1902 mSDtfsCounter, 2116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:33,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 1902 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 03:54:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2022-11-03 03:54:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2022-11-03 03:54:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1848 states have (on average 1.2997835497835497) internal successors, (2402), 1894 states have internal predecessors, (2402), 924 states have call successors, (924), 235 states have call predecessors, (924), 234 states have return successors, (913), 909 states have call predecessors, (913), 913 states have call successors, (913) [2022-11-03 03:54:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4239 transitions. [2022-11-03 03:54:34,112 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4239 transitions. Word has length 53 [2022-11-03 03:54:34,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:34,117 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4239 transitions. [2022-11-03 03:54:34,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4239 transitions. [2022-11-03 03:54:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 03:54:34,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:34,123 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:54:34,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:54:34,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:34,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash -381576224, now seen corresponding path program 1 times [2022-11-03 03:54:34,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:34,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007889427] [2022-11-03 03:54:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:34,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:54:35,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:35,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007889427] [2022-11-03 03:54:35,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007889427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:35,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:35,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:35,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860300506] [2022-11-03 03:54:35,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:35,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:35,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:35,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:35,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:35,095 INFO L87 Difference]: Start difference. First operand 3007 states and 4239 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:54:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:38,780 INFO L93 Difference]: Finished difference Result 7454 states and 10506 transitions. [2022-11-03 03:54:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:38,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2022-11-03 03:54:38,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:38,819 INFO L225 Difference]: With dead ends: 7454 [2022-11-03 03:54:38,819 INFO L226 Difference]: Without dead ends: 4452 [2022-11-03 03:54:38,839 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 03:54:38,845 INFO L413 NwaCegarLoop]: 2349 mSDtfsCounter, 2075 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:38,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 4244 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:54:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2022-11-03 03:54:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4431. [2022-11-03 03:54:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 2722 states have (on average 1.2997795738427627) internal successors, (3538), 2787 states have internal predecessors, (3538), 1360 states have call successors, (1360), 349 states have call predecessors, (1360), 348 states have return successors, (1349), 1342 states have call predecessors, (1349), 1349 states have call successors, (1349) [2022-11-03 03:54:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 6247 transitions. [2022-11-03 03:54:39,223 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 6247 transitions. Word has length 56 [2022-11-03 03:54:39,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:39,228 INFO L495 AbstractCegarLoop]: Abstraction has 4431 states and 6247 transitions. [2022-11-03 03:54:39,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:54:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 6247 transitions. [2022-11-03 03:54:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:54:39,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:39,234 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:54:39,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:54:39,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash -200176749, now seen corresponding path program 1 times [2022-11-03 03:54:39,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:39,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66566989] [2022-11-03 03:54:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:39,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:54:40,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66566989] [2022-11-03 03:54:40,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66566989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:40,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:40,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682661395] [2022-11-03 03:54:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:40,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:40,114 INFO L87 Difference]: Start difference. First operand 4431 states and 6247 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:42,502 INFO L93 Difference]: Finished difference Result 4441 states and 6252 transitions. [2022-11-03 03:54:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:42,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-11-03 03:54:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:42,544 INFO L225 Difference]: With dead ends: 4441 [2022-11-03 03:54:42,544 INFO L226 Difference]: Without dead ends: 4437 [2022-11-03 03:54:42,549 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 03:54:42,553 INFO L413 NwaCegarLoop]: 1898 mSDtfsCounter, 2088 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:42,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 1915 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 03:54:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4437 states. [2022-11-03 03:54:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4437 to 4435. [2022-11-03 03:54:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4435 states, 2725 states have (on average 1.2979816513761468) internal successors, (3537), 2788 states have internal predecessors, (3537), 1358 states have call successors, (1358), 352 states have call predecessors, (1358), 351 states have return successors, (1349), 1342 states have call predecessors, (1349), 1349 states have call successors, (1349) [2022-11-03 03:54:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4435 states to 4435 states and 6244 transitions. [2022-11-03 03:54:42,919 INFO L78 Accepts]: Start accepts. Automaton has 4435 states and 6244 transitions. Word has length 54 [2022-11-03 03:54:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:42,920 INFO L495 AbstractCegarLoop]: Abstraction has 4435 states and 6244 transitions. [2022-11-03 03:54:42,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:42,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4435 states and 6244 transitions. [2022-11-03 03:54:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 03:54:42,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:42,923 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:54:42,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:54:42,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1911361864, now seen corresponding path program 1 times [2022-11-03 03:54:42,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:42,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771715267] [2022-11-03 03:54:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:54:43,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:43,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771715267] [2022-11-03 03:54:43,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771715267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:43,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:43,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:43,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873890025] [2022-11-03 03:54:43,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:43,917 INFO L87 Difference]: Start difference. First operand 4435 states and 6244 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:48,532 INFO L93 Difference]: Finished difference Result 8679 states and 12291 transitions. [2022-11-03 03:54:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:48,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-11-03 03:54:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:48,611 INFO L225 Difference]: With dead ends: 8679 [2022-11-03 03:54:48,611 INFO L226 Difference]: Without dead ends: 8675 [2022-11-03 03:54:48,621 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 03:54:48,622 INFO L413 NwaCegarLoop]: 2411 mSDtfsCounter, 2035 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 4302 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:48,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 4302 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:54:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8675 states. [2022-11-03 03:54:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8675 to 8670. [2022-11-03 03:54:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8670 states, 5333 states have (on average 1.296643540221264) internal successors, (6915), 5445 states have internal predecessors, (6915), 2639 states have call successors, (2639), 698 states have call predecessors, (2639), 697 states have return successors, (2726), 2616 states have call predecessors, (2726), 2630 states have call successors, (2726) [2022-11-03 03:54:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 12280 transitions. [2022-11-03 03:54:49,477 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 12280 transitions. Word has length 55 [2022-11-03 03:54:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:49,477 INFO L495 AbstractCegarLoop]: Abstraction has 8670 states and 12280 transitions. [2022-11-03 03:54:49,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 12280 transitions. [2022-11-03 03:54:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 03:54:49,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:49,480 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:54:49,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:54:49,481 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:49,482 INFO L85 PathProgramCache]: Analyzing trace with hash 876479286, now seen corresponding path program 1 times [2022-11-03 03:54:49,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:49,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944569281] [2022-11-03 03:54:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:54:50,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:50,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944569281] [2022-11-03 03:54:50,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944569281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:50,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:50,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904863563] [2022-11-03 03:54:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:50,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:50,274 INFO L87 Difference]: Start difference. First operand 8670 states and 12280 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:52,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:52,753 INFO L93 Difference]: Finished difference Result 8672 states and 12281 transitions. [2022-11-03 03:54:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:52,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-11-03 03:54:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:52,819 INFO L225 Difference]: With dead ends: 8672 [2022-11-03 03:54:52,820 INFO L226 Difference]: Without dead ends: 8669 [2022-11-03 03:54:52,828 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 03:54:52,829 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 2107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2107 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:52,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2107 Valid, 1896 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 03:54:52,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2022-11-03 03:54:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 8669. [2022-11-03 03:54:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8669 states, 5333 states have (on average 1.2964560285017814) internal successors, (6914), 5444 states have internal predecessors, (6914), 2638 states have call successors, (2638), 698 states have call predecessors, (2638), 697 states have return successors, (2726), 2616 states have call predecessors, (2726), 2630 states have call successors, (2726) [2022-11-03 03:54:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8669 states to 8669 states and 12278 transitions. [2022-11-03 03:54:53,921 INFO L78 Accepts]: Start accepts. Automaton has 8669 states and 12278 transitions. Word has length 56 [2022-11-03 03:54:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:53,921 INFO L495 AbstractCegarLoop]: Abstraction has 8669 states and 12278 transitions. [2022-11-03 03:54:53,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8669 states and 12278 transitions. [2022-11-03 03:54:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 03:54:53,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:53,925 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:54:53,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:54:53,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:53,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1400213883, now seen corresponding path program 1 times [2022-11-03 03:54:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:53,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232620190] [2022-11-03 03:54:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:53,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:54:54,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232620190] [2022-11-03 03:54:54,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232620190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:54,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:54,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:54,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827212019] [2022-11-03 03:54:54,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:54,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:54,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:54,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:54,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:54,769 INFO L87 Difference]: Start difference. First operand 8669 states and 12278 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:54:58,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:00,439 INFO L93 Difference]: Finished difference Result 14475 states and 20492 transitions. [2022-11-03 03:55:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2022-11-03 03:55:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:00,544 INFO L225 Difference]: With dead ends: 14475 [2022-11-03 03:55:00,544 INFO L226 Difference]: Without dead ends: 14471 [2022-11-03 03:55:00,557 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 03:55:00,557 INFO L413 NwaCegarLoop]: 2351 mSDtfsCounter, 2086 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 4231 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:00,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 4231 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 03:55:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14471 states. [2022-11-03 03:55:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14471 to 14443. [2022-11-03 03:55:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14443 states, 8893 states have (on average 1.2966378050151806) internal successors, (11531), 9072 states have internal predecessors, (11531), 4388 states have call successors, (4388), 1164 states have call predecessors, (4388), 1161 states have return successors, (4540), 4356 states have call predecessors, (4540), 4380 states have call successors, (4540) [2022-11-03 03:55:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14443 states to 14443 states and 20459 transitions. [2022-11-03 03:55:01,955 INFO L78 Accepts]: Start accepts. Automaton has 14443 states and 20459 transitions. Word has length 57 [2022-11-03 03:55:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:01,957 INFO L495 AbstractCegarLoop]: Abstraction has 14443 states and 20459 transitions. [2022-11-03 03:55:01,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:55:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 14443 states and 20459 transitions. [2022-11-03 03:55:01,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 03:55:01,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:01,960 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:55:01,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:55:01,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash 456122073, now seen corresponding path program 1 times [2022-11-03 03:55:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:01,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408802106] [2022-11-03 03:55:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:55:02,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:02,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408802106] [2022-11-03 03:55:02,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408802106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:02,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:02,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:02,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196276621] [2022-11-03 03:55:02,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:02,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:02,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:02,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:02,844 INFO L87 Difference]: Start difference. First operand 14443 states and 20459 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:55:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:05,950 INFO L93 Difference]: Finished difference Result 14445 states and 20460 transitions. [2022-11-03 03:55:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-11-03 03:55:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:06,028 INFO L225 Difference]: With dead ends: 14445 [2022-11-03 03:55:06,028 INFO L226 Difference]: Without dead ends: 14434 [2022-11-03 03:55:06,038 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 03:55:06,039 INFO L413 NwaCegarLoop]: 1895 mSDtfsCounter, 2103 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:06,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 1895 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 03:55:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14434 states. [2022-11-03 03:55:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14434 to 14434. [2022-11-03 03:55:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14434 states, 8885 states have (on average 1.2963421496904897) internal successors, (11518), 9063 states have internal predecessors, (11518), 4387 states have call successors, (4387), 1164 states have call predecessors, (4387), 1161 states have return successors, (4540), 4356 states have call predecessors, (4540), 4380 states have call successors, (4540) [2022-11-03 03:55:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14434 states to 14434 states and 20445 transitions. [2022-11-03 03:55:07,416 INFO L78 Accepts]: Start accepts. Automaton has 14434 states and 20445 transitions. Word has length 58 [2022-11-03 03:55:07,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:07,417 INFO L495 AbstractCegarLoop]: Abstraction has 14434 states and 20445 transitions. [2022-11-03 03:55:07,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:55:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 14434 states and 20445 transitions. [2022-11-03 03:55:07,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 03:55:07,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:07,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:07,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:55:07,426 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:07,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash 953007028, now seen corresponding path program 1 times [2022-11-03 03:55:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:07,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856732954] [2022-11-03 03:55:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:08,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856732954] [2022-11-03 03:55:08,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856732954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:08,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:08,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:08,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927379020] [2022-11-03 03:55:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:08,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:08,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:08,254 INFO L87 Difference]: Start difference. First operand 14434 states and 20445 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:55:11,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:14,517 INFO L93 Difference]: Finished difference Result 36324 states and 51273 transitions. [2022-11-03 03:55:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:14,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2022-11-03 03:55:14,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:14,634 INFO L225 Difference]: With dead ends: 36324 [2022-11-03 03:55:14,634 INFO L226 Difference]: Without dead ends: 21895 [2022-11-03 03:55:14,720 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 03:55:14,721 INFO L413 NwaCegarLoop]: 2403 mSDtfsCounter, 1517 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:14,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 4253 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 03:55:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21895 states. [2022-11-03 03:55:16,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21895 to 21848. [2022-11-03 03:55:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21848 states, 13506 states have (on average 1.2950540500518288) internal successors, (17491), 13798 states have internal predecessors, (17491), 6523 states have call successors, (6523), 1823 states have call predecessors, (6523), 1818 states have return successors, (6764), 6476 states have call predecessors, (6764), 6516 states have call successors, (6764) [2022-11-03 03:55:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21848 states to 21848 states and 30778 transitions. [2022-11-03 03:55:16,864 INFO L78 Accepts]: Start accepts. Automaton has 21848 states and 30778 transitions. Word has length 85 [2022-11-03 03:55:16,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:16,864 INFO L495 AbstractCegarLoop]: Abstraction has 21848 states and 30778 transitions. [2022-11-03 03:55:16,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:55:16,865 INFO L276 IsEmpty]: Start isEmpty. Operand 21848 states and 30778 transitions. [2022-11-03 03:55:16,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:55:16,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:16,875 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:55:16,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:55:16,875 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:16,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2087649169, now seen corresponding path program 1 times [2022-11-03 03:55:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:16,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230173825] [2022-11-03 03:55:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:16,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:55:19,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:19,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230173825] [2022-11-03 03:55:19,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230173825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:19,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:19,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:55:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343044414] [2022-11-03 03:55:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:19,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:55:19,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:55:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:55:19,605 INFO L87 Difference]: Start difference. First operand 21848 states and 30778 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:55:30,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:35,153 INFO L93 Difference]: Finished difference Result 21875 states and 30804 transitions. [2022-11-03 03:55:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:55:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-11-03 03:55:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:35,291 INFO L225 Difference]: With dead ends: 21875 [2022-11-03 03:55:35,292 INFO L226 Difference]: Without dead ends: 21872 [2022-11-03 03:55:35,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:55:35,315 INFO L413 NwaCegarLoop]: 2508 mSDtfsCounter, 423 mSDsluCounter, 7073 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 8783 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:35,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 8783 Invalid, 1862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-03 03:55:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21872 states. [2022-11-03 03:55:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21872 to 21871. [2022-11-03 03:55:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21871 states, 13522 states have (on average 1.2950007395355716) internal successors, (17511), 13813 states have internal predecessors, (17511), 6522 states have call successors, (6522), 1831 states have call predecessors, (6522), 1826 states have return successors, (6764), 6476 states have call predecessors, (6764), 6516 states have call successors, (6764) [2022-11-03 03:55:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21871 states to 21871 states and 30797 transitions. [2022-11-03 03:55:36,962 INFO L78 Accepts]: Start accepts. Automaton has 21871 states and 30797 transitions. Word has length 101 [2022-11-03 03:55:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:36,963 INFO L495 AbstractCegarLoop]: Abstraction has 21871 states and 30797 transitions. [2022-11-03 03:55:36,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:55:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 21871 states and 30797 transitions. [2022-11-03 03:55:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 03:55:36,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:36,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:36,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:55:36,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -163901913, now seen corresponding path program 1 times [2022-11-03 03:55:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354952837] [2022-11-03 03:55:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:36,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:55:37,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:37,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354952837] [2022-11-03 03:55:37,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354952837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:37,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:37,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:37,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137662840] [2022-11-03 03:55:37,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:37,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:37,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:37,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:37,798 INFO L87 Difference]: Start difference. First operand 21871 states and 30797 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 03:55:43,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:43,344 INFO L93 Difference]: Finished difference Result 50875 states and 71548 transitions. [2022-11-03 03:55:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:43,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-03 03:55:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:43,525 INFO L225 Difference]: With dead ends: 50875 [2022-11-03 03:55:43,525 INFO L226 Difference]: Without dead ends: 31036 [2022-11-03 03:55:43,643 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 03:55:43,645 INFO L413 NwaCegarLoop]: 3292 mSDtfsCounter, 1944 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:43,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 4875 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 03:55:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31036 states. [2022-11-03 03:55:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31036 to 31011. [2022-11-03 03:55:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31011 states, 19255 states have (on average 1.2932744741625553) internal successors, (24902), 19666 states have internal predecessors, (24902), 9100 states have call successors, (9100), 2662 states have call predecessors, (9100), 2655 states have return successors, (9438), 9036 states have call predecessors, (9438), 9094 states have call successors, (9438) [2022-11-03 03:55:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31011 states to 31011 states and 43440 transitions. [2022-11-03 03:55:46,841 INFO L78 Accepts]: Start accepts. Automaton has 31011 states and 43440 transitions. Word has length 111 [2022-11-03 03:55:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:46,842 INFO L495 AbstractCegarLoop]: Abstraction has 31011 states and 43440 transitions. [2022-11-03 03:55:46,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 03:55:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 31011 states and 43440 transitions. [2022-11-03 03:55:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 03:55:46,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:46,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:55:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:55:46,861 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:46,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2006951460, now seen corresponding path program 1 times [2022-11-03 03:55:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:46,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041066737] [2022-11-03 03:55:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:46,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-03 03:55:49,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:49,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041066737] [2022-11-03 03:55:49,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041066737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:49,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692034624] [2022-11-03 03:55:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:49,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:49,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:49,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:49,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:55:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:52,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 7854 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:55:52,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:55:52,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 03:55:53,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692034624] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:53,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:55:53,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 13 [2022-11-03 03:55:53,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609956227] [2022-11-03 03:55:53,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:53,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:55:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:53,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:55:53,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:55:53,247 INFO L87 Difference]: Start difference. First operand 31011 states and 43440 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:56:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:00,485 INFO L93 Difference]: Finished difference Result 31013 states and 43441 transitions. [2022-11-03 03:56:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:56:00,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-11-03 03:56:00,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:00,651 INFO L225 Difference]: With dead ends: 31013 [2022-11-03 03:56:00,651 INFO L226 Difference]: Without dead ends: 31002 [2022-11-03 03:56:00,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:56:00,675 INFO L413 NwaCegarLoop]: 1885 mSDtfsCounter, 4501 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1838 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:00,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 1902 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1838 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 03:56:00,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31002 states. [2022-11-03 03:56:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31002 to 30949. [2022-11-03 03:56:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30949 states, 19213 states have (on average 1.2931869046999427) internal successors, (24846), 19628 states have internal predecessors, (24846), 9086 states have call successors, (9086), 2650 states have call predecessors, (9086), 2649 states have return successors, (9426), 9024 states have call predecessors, (9426), 9082 states have call successors, (9426) [2022-11-03 03:56:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30949 states to 30949 states and 43358 transitions. [2022-11-03 03:56:03,661 INFO L78 Accepts]: Start accepts. Automaton has 30949 states and 43358 transitions. Word has length 112 [2022-11-03 03:56:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:03,662 INFO L495 AbstractCegarLoop]: Abstraction has 30949 states and 43358 transitions. [2022-11-03 03:56:03,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:56:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand 30949 states and 43358 transitions. [2022-11-03 03:56:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-03 03:56:03,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:03,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:56:03,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:56:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:03,912 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1537218745, now seen corresponding path program 1 times [2022-11-03 03:56:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:03,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218970057] [2022-11-03 03:56:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:03,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:04,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:04,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218970057] [2022-11-03 03:56:04,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:56:04,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539899431] [2022-11-03 03:56:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:04,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:04,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:04,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:56:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:06,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 8261 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:56:06,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:56:06,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:06,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539899431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:06,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:06,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512072435] [2022-11-03 03:56:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:06,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:06,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:06,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:06,750 INFO L87 Difference]: Start difference. First operand 30949 states and 43358 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:56:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:14,225 INFO L93 Difference]: Finished difference Result 79598 states and 111070 transitions. [2022-11-03 03:56:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:14,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 138 [2022-11-03 03:56:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:14,422 INFO L225 Difference]: With dead ends: 79598 [2022-11-03 03:56:14,422 INFO L226 Difference]: Without dead ends: 48654 [2022-11-03 03:56:14,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 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 03:56:14,532 INFO L413 NwaCegarLoop]: 2399 mSDtfsCounter, 1761 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 4203 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:14,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 4203 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 03:56:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48654 states. [2022-11-03 03:56:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48654 to 48435. [2022-11-03 03:56:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48435 states, 30299 states have (on average 1.287204198158355) internal successors, (39001), 30962 states have internal predecessors, (39001), 13853 states have call successors, (13853), 4291 states have call predecessors, (13853), 4282 states have return successors, (14249), 13716 states have call predecessors, (14249), 13849 states have call successors, (14249) [2022-11-03 03:56:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48435 states to 48435 states and 67103 transitions. [2022-11-03 03:56:18,888 INFO L78 Accepts]: Start accepts. Automaton has 48435 states and 67103 transitions. Word has length 138 [2022-11-03 03:56:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:18,892 INFO L495 AbstractCegarLoop]: Abstraction has 48435 states and 67103 transitions. [2022-11-03 03:56:18,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:56:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 48435 states and 67103 transitions. [2022-11-03 03:56:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:56:18,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:18,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:18,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:56:19,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb4c378-73a0-4193-ae1d-f78c479e4d9e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 03:56:19,132 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash -67376255, now seen corresponding path program 1 times [2022-11-03 03:56:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:19,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171352883] [2022-11-03 03:56:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:19,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 03:56:20,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:20,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171352883] [2022-11-03 03:56:20,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171352883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:20,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:20,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:20,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31614651] [2022-11-03 03:56:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:20,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:20,422 INFO L87 Difference]: Start difference. First operand 48435 states and 67103 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13)