./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--hwmon--it87.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--it87.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW --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 5a989f4e4a3aacdd59050e92fbc137ca8587ab53a966b56d72019bc54a6301ad --- 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-4e7fbc6 [2022-11-23 14:09:44,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:09:44,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:09:44,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:09:44,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:09:44,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:09:44,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:09:44,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:09:44,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:09:44,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:09:44,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:09:44,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:09:44,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:09:44,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:09:44,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:09:44,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:09:44,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:09:44,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:09:44,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:09:44,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:09:44,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:09:44,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:09:44,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:09:44,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:09:44,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:09:44,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:09:44,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:09:44,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:09:44,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:09:44,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:09:44,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:09:44,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:09:44,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:09:44,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:09:44,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:09:44,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:09:44,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:09:44,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:09:44,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:09:44,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:09:44,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:09:44,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:09:44,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:09:44,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:09:44,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:09:44,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:09:44,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:09:44,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:09:44,333 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:09:44,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:09:44,333 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:09:44,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:09:44,334 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:09:44,334 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:09:44,334 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:09:44,335 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:09:44,335 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:09:44,335 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:09:44,335 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:09:44,335 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:09:44,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:09:44,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:09:44,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:09:44,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:09:44,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:09:44,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:09:44,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:09:44,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:09:44,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:09:44,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:09:44,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:09:44,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:09:44,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:09:44,339 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:09:44,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:09:44,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:09:44,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:09:44,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:09:44,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:09:44,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:09:44,340 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_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a989f4e4a3aacdd59050e92fbc137ca8587ab53a966b56d72019bc54a6301ad [2022-11-23 14:09:44,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:09:44,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:09:44,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:09:44,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:09:44,665 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:09:44,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--it87.ko-entry_point.cil.out.i [2022-11-23 14:09:47,740 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:09:48,510 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:09:48,511 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--it87.ko-entry_point.cil.out.i [2022-11-23 14:09:48,571 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/data/63698e1c7/d80a90d772af42c3b273765efe7e33bf/FLAGded263a2a [2022-11-23 14:09:48,590 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/data/63698e1c7/d80a90d772af42c3b273765efe7e33bf [2022-11-23 14:09:48,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:09:48,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:09:48,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:09:48,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:09:48,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:09:48,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:48" (1/1) ... [2022-11-23 14:09:48,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a89393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:48, skipping insertion in model container [2022-11-23 14:09:48,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:48" (1/1) ... [2022-11-23 14:09:48,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:09:48,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:09:51,385 WARN L237 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_e04e013b-1772-44b4-b855-dc7d3cf6da0c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--it87.ko-entry_point.cil.out.i[424639,424652] [2022-11-23 14:09:51,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:09:51,744 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:09:52,226 WARN L237 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_e04e013b-1772-44b4-b855-dc7d3cf6da0c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--it87.ko-entry_point.cil.out.i[424639,424652] [2022-11-23 14:09:52,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:09:52,976 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:09:52,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52 WrapperNode [2022-11-23 14:09:52,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:09:52,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:09:52,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:09:52,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:09:52,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:53,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:53,566 INFO L138 Inliner]: procedures = 330, calls = 5968, calls flagged for inlining = 175, calls inlined = 170, statements flattened = 15243 [2022-11-23 14:09:53,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:09:53,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:09:53,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:09:53,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:09:53,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:53,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:53,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:53,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:53,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:54,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:54,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:54,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:54,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:09:54,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:09:54,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:09:54,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:09:54,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (1/1) ... [2022-11-23 14:09:54,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:09:54,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:09:54,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:09:54,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04e013b-1772-44b4-b855-dc7d3cf6da0c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:09:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-23 14:09:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-23 14:09:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-11-23 14:09:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-11-23 14:09:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:09:54,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:09:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:09:54,503 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:09:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure adc_lsb [2022-11-23 14:09:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure adc_lsb [2022-11-23 14:09:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure set_pwm_enable [2022-11-23 14:09:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure set_pwm_enable [2022-11-23 14:09:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure set_in [2022-11-23 14:09:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in [2022-11-23 14:09:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-23 14:09:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-23 14:09:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:09:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:09:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-23 14:09:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-23 14:09:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2022-11-23 14:09:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2022-11-23 14:09:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:09:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:09:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:09:54,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:09:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure superio_select [2022-11-23 14:09:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_select [2022-11-23 14:09:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:09:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:09:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:09:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:09:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure it87_remove_files [2022-11-23 14:09:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure it87_remove_files [2022-11-23 14:09:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inb [2022-11-23 14:09:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inb [2022-11-23 14:09:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outb [2022-11-23 14:09:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outb [2022-11-23 14:09:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 14:09:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 14:09:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_freq [2022-11-23 14:09:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_freq [2022-11-23 14:09:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inw [2022-11-23 14:09:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inw [2022-11-23 14:09:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure set_auto_pwm [2022-11-23 14:09:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auto_pwm [2022-11-23 14:09:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:09:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2022-11-23 14:09:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2022-11-23 14:09:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-23 14:09:54,528 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-23 14:09:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-23 14:09:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-23 14:09:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:09:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:09:54,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:09:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-11-23 14:09:54,531 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-11-23 14:09:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-23 14:09:54,531 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-23 14:09:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:09:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:09:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure show_auto_pwm [2022-11-23 14:09:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure show_auto_pwm [2022-11-23 14:09:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure it87_probe [2022-11-23 14:09:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure it87_probe [2022-11-23 14:09:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-11-23 14:09:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-11-23 14:09:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_enable [2022-11-23 14:09:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_enable [2022-11-23 14:09:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_type [2022-11-23 14:09:54,533 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_type [2022-11-23 14:09:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 14:09:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 14:09:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_it87_data [2022-11-23 14:09:54,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_it87_data [2022-11-23 14:09:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2022-11-23 14:09:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2022-11-23 14:09:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-23 14:09:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-23 14:09:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 14:09:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 14:09:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-23 14:09:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-23 14:09:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure set_pwm_temp_map [2022-11-23 14:09:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure set_pwm_temp_map [2022-11-23 14:09:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:09:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure set_auto_temp [2022-11-23 14:09:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auto_temp [2022-11-23 14:09:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_temp_map [2022-11-23 14:09:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_temp_map [2022-11-23 14:09:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-23 14:09:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-23 14:09:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure it87_write_value [2022-11-23 14:09:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure it87_write_value [2022-11-23 14:09:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-23 14:09:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-23 14:09:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:09:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-11-23 14:09:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-11-23 14:09:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:09:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:09:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:09:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:09:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_type [2022-11-23 14:09:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_type [2022-11-23 14:09:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:09:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 14:09:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 14:09:54,556 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_file [2022-11-23 14:09:54,557 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_file [2022-11-23 14:09:54,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:09:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:09:54,561 INFO L130 BoogieDeclarations]: Found specification of procedure it87_read_value [2022-11-23 14:09:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure it87_read_value [2022-11-23 14:09:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure pwm_to_reg [2022-11-23 14:09:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pwm_to_reg [2022-11-23 14:09:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_it87_data [2022-11-23 14:09:54,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_it87_data [2022-11-23 14:09:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure show_label [2022-11-23 14:09:54,569 INFO L138 BoogieDeclarations]: Found implementation of procedure show_label [2022-11-23 14:09:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure set_beep [2022-11-23 14:09:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure set_beep [2022-11-23 14:09:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure set_pwm [2022-11-23 14:09:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure set_pwm [2022-11-23 14:09:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-23 14:09:54,570 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-23 14:09:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-23 14:09:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-23 14:09:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-11-23 14:09:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-11-23 14:09:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure it87_remove [2022-11-23 14:09:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure it87_remove [2022-11-23 14:09:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-23 14:09:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-23 14:09:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure it87_update_device [2022-11-23 14:09:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure it87_update_device [2022-11-23 14:09:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure show_auto_temp [2022-11-23 14:09:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure show_auto_temp [2022-11-23 14:09:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-23 14:09:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-23 14:09:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure pwm_from_reg [2022-11-23 14:09:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pwm_from_reg [2022-11-23 14:09:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-11-23 14:09:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-11-23 14:09:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:09:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:09:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:09:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:09:54,574 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:09:56,226 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:09:56,229 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:09:56,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:10:16,816 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:10:19,458 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:10:19,458 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:10:19,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:19 BoogieIcfgContainer [2022-11-23 14:10:19,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:10:19,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:10:19,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:10:19,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:10:19,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:09:48" (1/3) ... [2022-11-23 14:10:19,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a83e085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:19, skipping insertion in model container [2022-11-23 14:10:19,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:52" (2/3) ... [2022-11-23 14:10:19,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a83e085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:19, skipping insertion in model container [2022-11-23 14:10:19,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:19" (3/3) ... [2022-11-23 14:10:19,481 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--it87.ko-entry_point.cil.out.i [2022-11-23 14:10:19,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:10:19,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:10:19,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:10:19,656 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;@37c9a99e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:10:19,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:10:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 3700 states, 2384 states have (on average 1.4408557046979866) internal successors, (3435), 2540 states have internal predecessors, (3435), 1246 states have call successors, (1246), 69 states have call predecessors, (1246), 68 states have return successors, (1105), 1105 states have call predecessors, (1105), 1105 states have call successors, (1105) [2022-11-23 14:10:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4746 [2022-11-23 14:10:20,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:20,167 INFO L195 NwaCegarLoop]: trace histogram [333, 333, 333, 333, 333, 333, 333, 333, 333, 81, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:10:20,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:10:20,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash 869467307, now seen corresponding path program 1 times [2022-11-23 14:10:20,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:20,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959198249] [2022-11-23 14:10:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 575460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 575460 trivial. 0 not checked. [2022-11-23 14:10:42,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:42,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959198249] [2022-11-23 14:10:42,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959198249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:42,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:42,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:10:42,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402784076] [2022-11-23 14:10:42,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:42,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:42,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:42,197 INFO L87 Difference]: Start difference. First operand has 3700 states, 2384 states have (on average 1.4408557046979866) internal successors, (3435), 2540 states have internal predecessors, (3435), 1246 states have call successors, (1246), 69 states have call predecessors, (1246), 68 states have return successors, (1105), 1105 states have call predecessors, (1105), 1105 states have call successors, (1105) Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) [2022-11-23 14:10:44,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:10:46,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:10:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:50,681 INFO L93 Difference]: Finished difference Result 9420 states and 15350 transitions. [2022-11-23 14:10:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:10:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) Word has length 4745 [2022-11-23 14:10:50,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:50,769 INFO L225 Difference]: With dead ends: 9420 [2022-11-23 14:10:50,770 INFO L226 Difference]: Without dead ends: 6267 [2022-11-23 14:10:50,802 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 [2022-11-23 14:10:50,806 INFO L413 NwaCegarLoop]: 6221 mSDtfsCounter, 4509 mSDsluCounter, 5529 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4509 SdHoareTripleChecker+Valid, 11750 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:50,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4509 Valid, 11750 Invalid, 496 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-23 14:10:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2022-11-23 14:10:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 6252. [2022-11-23 14:10:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 4332 states have (on average 1.417820867959372) internal successors, (6142), 4355 states have internal predecessors, (6142), 1786 states have call successors, (1786), 134 states have call predecessors, (1786), 133 states have return successors, (1780), 1778 states have call predecessors, (1780), 1780 states have call successors, (1780) [2022-11-23 14:10:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 9708 transitions. [2022-11-23 14:10:51,773 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 9708 transitions. Word has length 4745 [2022-11-23 14:10:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:51,782 INFO L495 AbstractCegarLoop]: Abstraction has 6252 states and 9708 transitions. [2022-11-23 14:10:51,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) [2022-11-23 14:10:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 9708 transitions. [2022-11-23 14:10:52,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4748 [2022-11-23 14:10:52,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:52,236 INFO L195 NwaCegarLoop]: trace histogram [333, 333, 333, 333, 333, 333, 333, 333, 333, 81, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:10:52,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:10:52,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:10:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1297681380, now seen corresponding path program 1 times [2022-11-23 14:10:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:52,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667925059] [2022-11-23 14:10:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:52,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 575460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 575460 trivial. 0 not checked. [2022-11-23 14:11:06,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:06,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667925059] [2022-11-23 14:11:06,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667925059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:06,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:06,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510973046] [2022-11-23 14:11:06,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:06,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:06,940 INFO L87 Difference]: Start difference. First operand 6252 states and 9708 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) [2022-11-23 14:11:09,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:13,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:13,043 INFO L93 Difference]: Finished difference Result 17059 states and 26581 transitions. [2022-11-23 14:11:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:13,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) Word has length 4747 [2022-11-23 14:11:13,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:13,129 INFO L225 Difference]: With dead ends: 17059 [2022-11-23 14:11:13,130 INFO L226 Difference]: Without dead ends: 11640 [2022-11-23 14:11:13,156 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 [2022-11-23 14:11:13,157 INFO L413 NwaCegarLoop]: 5943 mSDtfsCounter, 4213 mSDsluCounter, 5242 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4213 SdHoareTripleChecker+Valid, 11185 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:13,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4213 Valid, 11185 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 14:11:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2022-11-23 14:11:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 11624. [2022-11-23 14:11:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11624 states, 8217 states have (on average 1.4389679931848607) internal successors, (11824), 8260 states have internal predecessors, (11824), 3141 states have call successors, (3141), 266 states have call predecessors, (3141), 265 states have return successors, (3135), 3129 states have call predecessors, (3135), 3135 states have call successors, (3135) [2022-11-23 14:11:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11624 states to 11624 states and 18100 transitions. [2022-11-23 14:11:14,146 INFO L78 Accepts]: Start accepts. Automaton has 11624 states and 18100 transitions. Word has length 4747 [2022-11-23 14:11:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:14,217 INFO L495 AbstractCegarLoop]: Abstraction has 11624 states and 18100 transitions. [2022-11-23 14:11:14,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) [2022-11-23 14:11:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11624 states and 18100 transitions. [2022-11-23 14:11:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4746 [2022-11-23 14:11:14,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:14,391 INFO L195 NwaCegarLoop]: trace histogram [333, 333, 333, 333, 333, 333, 333, 333, 333, 81, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:14,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:11:14,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:14,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash -208953291, now seen corresponding path program 1 times [2022-11-23 14:11:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:14,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361902426] [2022-11-23 14:11:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:14,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 575460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 575460 trivial. 0 not checked. [2022-11-23 14:11:26,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:26,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361902426] [2022-11-23 14:11:26,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361902426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:26,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:26,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:26,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703606557] [2022-11-23 14:11:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:26,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:26,841 INFO L87 Difference]: Start difference. First operand 11624 states and 18100 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) [2022-11-23 14:11:29,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:33,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:33,424 INFO L93 Difference]: Finished difference Result 33162 states and 51736 transitions. [2022-11-23 14:11:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) Word has length 4745 [2022-11-23 14:11:33,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:33,585 INFO L225 Difference]: With dead ends: 33162 [2022-11-23 14:11:33,585 INFO L226 Difference]: Without dead ends: 22371 [2022-11-23 14:11:33,658 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 [2022-11-23 14:11:33,662 INFO L413 NwaCegarLoop]: 5958 mSDtfsCounter, 4221 mSDsluCounter, 5242 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4221 SdHoareTripleChecker+Valid, 11200 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:33,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4221 Valid, 11200 Invalid, 498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-23 14:11:33,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22371 states. [2022-11-23 14:11:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22371 to 22356. [2022-11-23 14:11:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22356 states, 15975 states have (on average 1.4501408450704225) internal successors, (23166), 16058 states have internal predecessors, (23166), 5851 states have call successors, (5851), 530 states have call predecessors, (5851), 529 states have return successors, (5845), 5831 states have call predecessors, (5845), 5845 states have call successors, (5845) [2022-11-23 14:11:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22356 states to 22356 states and 34862 transitions. [2022-11-23 14:11:35,578 INFO L78 Accepts]: Start accepts. Automaton has 22356 states and 34862 transitions. Word has length 4745 [2022-11-23 14:11:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:35,586 INFO L495 AbstractCegarLoop]: Abstraction has 22356 states and 34862 transitions. [2022-11-23 14:11:35,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) [2022-11-23 14:11:35,587 INFO L276 IsEmpty]: Start isEmpty. Operand 22356 states and 34862 transitions. [2022-11-23 14:11:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4750 [2022-11-23 14:11:35,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:35,768 INFO L195 NwaCegarLoop]: trace histogram [333, 333, 333, 333, 333, 333, 333, 333, 333, 81, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:35,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:11:35,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:35,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1050758347, now seen corresponding path program 1 times [2022-11-23 14:11:35,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:35,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854023137] [2022-11-23 14:11:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:35,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 575460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 575460 trivial. 0 not checked. [2022-11-23 14:11:47,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:47,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854023137] [2022-11-23 14:11:47,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854023137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:47,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:47,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906048741] [2022-11-23 14:11:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:47,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:47,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:47,482 INFO L87 Difference]: Start difference. First operand 22356 states and 34862 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) [2022-11-23 14:11:49,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:54,718 INFO L93 Difference]: Finished difference Result 65245 states and 101845 transitions. [2022-11-23 14:11:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) Word has length 4749 [2022-11-23 14:11:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:54,920 INFO L225 Difference]: With dead ends: 65245 [2022-11-23 14:11:54,921 INFO L226 Difference]: Without dead ends: 43722 [2022-11-23 14:11:55,014 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 [2022-11-23 14:11:55,018 INFO L413 NwaCegarLoop]: 5969 mSDtfsCounter, 4199 mSDsluCounter, 5242 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4199 SdHoareTripleChecker+Valid, 11211 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:55,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4199 Valid, 11211 Invalid, 498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-23 14:11:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43722 states. [2022-11-23 14:11:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43722 to 43700. [2022-11-23 14:11:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43700 states, 31419 states have (on average 1.456379897514243) internal successors, (45758), 31582 states have internal predecessors, (45758), 11223 states have call successors, (11223), 1058 states have call predecessors, (11223), 1057 states have return successors, (11217), 11187 states have call predecessors, (11217), 11217 states have call successors, (11217) [2022-11-23 14:11:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43700 states to 43700 states and 68198 transitions. [2022-11-23 14:11:58,350 INFO L78 Accepts]: Start accepts. Automaton has 43700 states and 68198 transitions. Word has length 4749 [2022-11-23 14:11:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:58,357 INFO L495 AbstractCegarLoop]: Abstraction has 43700 states and 68198 transitions. [2022-11-23 14:11:58,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 2 states have call successors, (422), 2 states have call predecessors, (422), 1 states have return successors, (418), 2 states have call predecessors, (418), 2 states have call successors, (418) [2022-11-23 14:11:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 43700 states and 68198 transitions. [2022-11-23 14:11:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4749 [2022-11-23 14:11:58,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:58,533 INFO L195 NwaCegarLoop]: trace histogram [333, 333, 333, 333, 333, 333, 333, 333, 333, 81, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:58,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:11:58,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:58,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1001396957, now seen corresponding path program 1 times [2022-11-23 14:11:58,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:58,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475948778] [2022-11-23 14:11:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:58,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms