./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--solos-pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/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_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--solos-pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/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_568539f8-439f-4dd0-8700-506782655595/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 e42845ce55dda80b8a38719326b34a62ad9c77fa8c9f846978e486c8165ceba5 --- 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 03:42:29,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:42:29,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:42:29,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:42:29,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:42:29,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:42:29,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:42:29,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:42:29,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:42:29,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:42:29,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:42:29,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:42:29,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:42:29,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:42:29,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:42:29,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:42:29,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:42:29,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:42:29,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:42:29,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:42:29,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:42:29,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:42:29,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:42:29,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:42:29,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:42:29,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:42:29,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:42:29,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:42:29,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:42:29,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:42:29,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:42:29,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:42:29,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:42:29,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:42:29,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:42:29,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:42:29,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:42:29,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:42:29,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:42:29,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:42:29,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:42:29,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:42:29,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:42:29,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:42:29,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:42:29,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:42:29,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:42:29,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:42:29,294 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:42:29,294 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:42:29,294 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:42:29,294 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:42:29,296 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:42:29,296 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:42:29,296 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:42:29,297 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:42:29,297 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:42:29,297 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:42:29,298 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:42:29,298 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:42:29,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:42:29,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:42:29,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:42:29,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:42:29,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:42:29,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:42:29,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:42:29,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:42:29,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:42:29,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:42:29,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:42:29,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:42:29,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:42:29,304 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:42:29,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:42:29,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:42:29,305 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:42:29,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:42:29,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:42:29,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:42:29,306 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_568539f8-439f-4dd0-8700-506782655595/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42845ce55dda80b8a38719326b34a62ad9c77fa8c9f846978e486c8165ceba5 [2022-11-03 03:42:29,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:42:29,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:42:29,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:42:29,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:42:29,694 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:42:29,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--solos-pci.ko-entry_point.cil.out.i [2022-11-03 03:42:29,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/data/0b6c7255a/9cb9003d344248c9b48a074908f4a814/FLAGf3694347c [2022-11-03 03:42:30,904 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:42:30,905 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--solos-pci.ko-entry_point.cil.out.i [2022-11-03 03:42:31,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/data/0b6c7255a/9cb9003d344248c9b48a074908f4a814/FLAGf3694347c [2022-11-03 03:42:31,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/data/0b6c7255a/9cb9003d344248c9b48a074908f4a814 [2022-11-03 03:42:31,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:42:31,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:42:31,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:42:31,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:42:31,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:42:31,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:31" (1/1) ... [2022-11-03 03:42:31,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e8bddb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:31, skipping insertion in model container [2022-11-03 03:42:31,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:31" (1/1) ... [2022-11-03 03:42:31,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:42:31,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:42:34,475 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_568539f8-439f-4dd0-8700-506782655595/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--solos-pci.ko-entry_point.cil.out.i[400474,400487] [2022-11-03 03:42:34,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:42:34,697 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:42:35,353 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_568539f8-439f-4dd0-8700-506782655595/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--solos-pci.ko-entry_point.cil.out.i[400474,400487] [2022-11-03 03:42:35,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:42:35,875 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:42:35,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35 WrapperNode [2022-11-03 03:42:35,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:42:35,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:42:35,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:42:35,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:42:35,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,337 INFO L138 Inliner]: procedures = 261, calls = 3500, calls flagged for inlining = 118, calls inlined = 108, statements flattened = 8480 [2022-11-03 03:42:36,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:42:36,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:42:36,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:42:36,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:42:36,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,742 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:42:36,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:42:36,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:42:36,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:42:36,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (1/1) ... [2022-11-03 03:42:36,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:42:36,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:42:36,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:42:37,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568539f8-439f-4dd0-8700-506782655595/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:42:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-03 03:42:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-03 03:42:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-03 03:42:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:42:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-03 03:42:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-03 03:42:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:42:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:42:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:42:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure geos_gpio_store [2022-11-03 03:42:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure geos_gpio_store [2022-11-03 03:42:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:42:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:42:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:42:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:42:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-03 03:42:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-03 03:42:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:42:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:42:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 03:42:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 03:42:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:42:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:42:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 03:42:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 03:42:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 03:42:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 03:42:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:42:37,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:42:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2022-11-03 03:42:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2022-11-03 03:42:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:42:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:42:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 03:42:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 03:42:37,056 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:42:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:42:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 03:42:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 03:42:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure hardware_show [2022-11-03 03:42:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure hardware_show [2022-11-03 03:42:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-03 03:42:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-03 03:42:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure print_buffer [2022-11-03 03:42:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure print_buffer [2022-11-03 03:42:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:42:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:42:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 03:42:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 03:42:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:42:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:42:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:42:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:42:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:42:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:42:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure fpga_queue [2022-11-03 03:42:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure fpga_queue [2022-11-03 03:42:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:42:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:42:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure solos_param_show [2022-11-03 03:42:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure solos_param_show [2022-11-03 03:42:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 03:42:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 03:42:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 03:42:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 03:42:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:42:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:42:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure atm_remove [2022-11-03 03:42:37,066 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_remove [2022-11-03 03:42:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:42:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:42:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 03:42:37,067 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 03:42:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-11-03 03:42:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 03:42:37,068 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 03:42:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:42:37,069 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:42:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 03:42:37,069 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 03:42:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 03:42:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 03:42:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:42:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:42:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:42:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:42:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:42:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure solos_param_store [2022-11-03 03:42:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure solos_param_store [2022-11-03 03:42:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:42:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-03 03:42:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-03 03:42:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:42:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:42:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:42:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-03 03:42:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-03 03:42:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-03 03:42:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-03 03:42:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:42:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:42:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:42:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:42:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:42:37,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:42:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-03 03:42:37,077 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-03 03:42:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:42:37,078 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:42:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-03 03:42:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-03 03:42:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:42:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-03 03:42:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-03 03:42:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-03 03:42:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-03 03:42:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 03:42:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 03:42:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 03:42:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 03:42:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:42:37,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:42:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure solos_pop [2022-11-03 03:42:37,093 INFO L138 BoogieDeclarations]: Found implementation of procedure solos_pop [2022-11-03 03:42:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:42:37,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:42:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:42:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:42:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:42:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 03:42:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 03:42:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 03:42:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 03:42:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:42:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 03:42:37,095 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 03:42:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:42:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:42:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 03:42:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 03:42:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure psend [2022-11-03 03:42:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure psend [2022-11-03 03:42:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 03:42:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 03:42:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 03:42:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 03:42:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:42:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:42:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure flash_upgrade [2022-11-03 03:42:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure flash_upgrade [2022-11-03 03:42:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-03 03:42:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-03 03:42:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 03:42:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 03:42:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-03 03:42:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-03 03:42:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 03:42:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 03:42:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_signal_change [2022-11-03 03:42:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_signal_change [2022-11-03 03:42:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure fpga_tx [2022-11-03 03:42:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure fpga_tx [2022-11-03 03:42:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:42:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:42:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 03:42:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 03:42:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:42:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:42:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:42:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:42:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-03 03:42:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-03 03:42:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:42:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 03:42:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 03:42:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure geos_gpio_show [2022-11-03 03:42:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure geos_gpio_show [2022-11-03 03:42:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 03:42:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 03:42:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:42:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:42:38,320 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:42:38,326 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:42:38,668 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:42:48,285 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:42:49,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:42:49,754 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:42:49,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:49 BoogieIcfgContainer [2022-11-03 03:42:49,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:42:49,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:42:49,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:42:49,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:42:49,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:31" (1/3) ... [2022-11-03 03:42:49,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b325504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:49, skipping insertion in model container [2022-11-03 03:42:49,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:35" (2/3) ... [2022-11-03 03:42:49,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b325504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:49, skipping insertion in model container [2022-11-03 03:42:49,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:49" (3/3) ... [2022-11-03 03:42:49,775 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--solos-pci.ko-entry_point.cil.out.i [2022-11-03 03:42:49,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:42:49,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:42:49,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:42:49,969 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;@7032e0ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:42:49,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:42:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 2312 states, 1467 states have (on average 1.4192229038854807) internal successors, (2082), 1577 states have internal predecessors, (2082), 763 states have call successors, (763), 81 states have call predecessors, (763), 80 states have return successors, (670), 667 states have call predecessors, (670), 670 states have call successors, (670) [2022-11-03 03:42:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3004 [2022-11-03 03:42:50,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:50,354 INFO L195 NwaCegarLoop]: trace histogram [239, 239, 239, 239, 239, 239, 239, 239, 239, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:50,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:50,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 228144708, now seen corresponding path program 1 times [2022-11-03 03:42:50,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:50,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500309065] [2022-11-03 03:42:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:50,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 285238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285238 trivial. 0 not checked. [2022-11-03 03:43:00,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:00,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500309065] [2022-11-03 03:43:00,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500309065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:00,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:00,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:00,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987317990] [2022-11-03 03:43:00,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:00,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:00,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:00,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:00,871 INFO L87 Difference]: Start difference. First operand has 2312 states, 1467 states have (on average 1.4192229038854807) internal successors, (2082), 1577 states have internal predecessors, (2082), 763 states have call successors, (763), 81 states have call predecessors, (763), 80 states have return successors, (670), 667 states have call predecessors, (670), 670 states have call successors, (670) Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:03,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:04,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:04,330 INFO L93 Difference]: Finished difference Result 5859 states and 9151 transitions. [2022-11-03 03:43:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:04,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) Word has length 3003 [2022-11-03 03:43:04,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:04,392 INFO L225 Difference]: With dead ends: 5859 [2022-11-03 03:43:04,393 INFO L226 Difference]: Without dead ends: 3882 [2022-11-03 03:43:04,488 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 03:43:04,492 INFO L413 NwaCegarLoop]: 3757 mSDtfsCounter, 2692 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 7100 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:04,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 7100 Invalid, 333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 331 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:43:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-11-03 03:43:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3878. [2022-11-03 03:43:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 2648 states have (on average 1.3882175226586102) internal successors, (3676), 2679 states have internal predecessors, (3676), 1072 states have call successors, (1072), 158 states have call predecessors, (1072), 157 states have return successors, (1071), 1064 states have call predecessors, (1071), 1071 states have call successors, (1071) [2022-11-03 03:43:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5819 transitions. [2022-11-03 03:43:04,959 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5819 transitions. Word has length 3003 [2022-11-03 03:43:04,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:04,965 INFO L495 AbstractCegarLoop]: Abstraction has 3878 states and 5819 transitions. [2022-11-03 03:43:04,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5819 transitions. [2022-11-03 03:43:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3005 [2022-11-03 03:43:05,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:05,450 INFO L195 NwaCegarLoop]: trace histogram [239, 239, 239, 239, 239, 239, 239, 239, 239, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:05,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:43:05,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1658557394, now seen corresponding path program 1 times [2022-11-03 03:43:05,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:05,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257044048] [2022-11-03 03:43:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:05,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 285238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285238 trivial. 0 not checked. [2022-11-03 03:43:12,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:12,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257044048] [2022-11-03 03:43:12,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257044048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:12,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:12,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:12,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273695604] [2022-11-03 03:43:12,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:12,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:12,285 INFO L87 Difference]: Start difference. First operand 3878 states and 5819 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:14,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:15,617 INFO L93 Difference]: Finished difference Result 10543 states and 15822 transitions. [2022-11-03 03:43:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:15,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) Word has length 3004 [2022-11-03 03:43:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:15,679 INFO L225 Difference]: With dead ends: 10543 [2022-11-03 03:43:15,679 INFO L226 Difference]: Without dead ends: 7195 [2022-11-03 03:43:15,705 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 03:43:15,706 INFO L413 NwaCegarLoop]: 3578 mSDtfsCounter, 2493 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2493 SdHoareTripleChecker+Valid, 6729 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:15,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2493 Valid, 6729 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 03:43:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2022-11-03 03:43:16,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 7190. [2022-11-03 03:43:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7190 states, 5006 states have (on average 1.4085097882540951) internal successors, (7051), 5069 states have internal predecessors, (7051), 1870 states have call successors, (1870), 314 states have call predecessors, (1870), 313 states have return successors, (1869), 1854 states have call predecessors, (1869), 1869 states have call successors, (1869) [2022-11-03 03:43:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7190 states to 7190 states and 10790 transitions. [2022-11-03 03:43:16,274 INFO L78 Accepts]: Start accepts. Automaton has 7190 states and 10790 transitions. Word has length 3004 [2022-11-03 03:43:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:16,279 INFO L495 AbstractCegarLoop]: Abstraction has 7190 states and 10790 transitions. [2022-11-03 03:43:16,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 7190 states and 10790 transitions. [2022-11-03 03:43:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3005 [2022-11-03 03:43:16,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:16,355 INFO L195 NwaCegarLoop]: trace histogram [239, 239, 239, 239, 239, 239, 239, 239, 239, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:16,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:43:16,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash 349515043, now seen corresponding path program 1 times [2022-11-03 03:43:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:16,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531821516] [2022-11-03 03:43:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 285238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285238 trivial. 0 not checked. [2022-11-03 03:43:21,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:21,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531821516] [2022-11-03 03:43:21,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531821516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:21,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:21,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:21,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378506828] [2022-11-03 03:43:21,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:21,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:21,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:21,753 INFO L87 Difference]: Start difference. First operand 7190 states and 10790 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 2 states have call successors, (268), 2 states have call predecessors, (268), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:24,410 INFO L93 Difference]: Finished difference Result 20357 states and 30545 transitions. [2022-11-03 03:43:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 2 states have call successors, (268), 2 states have call predecessors, (268), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) Word has length 3004 [2022-11-03 03:43:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:24,543 INFO L225 Difference]: With dead ends: 20357 [2022-11-03 03:43:24,543 INFO L226 Difference]: Without dead ends: 13697 [2022-11-03 03:43:24,613 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 03:43:24,618 INFO L413 NwaCegarLoop]: 3578 mSDtfsCounter, 3243 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3243 SdHoareTripleChecker+Valid, 5941 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:24,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3243 Valid, 5941 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 03:43:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13697 states. [2022-11-03 03:43:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13697 to 13690. [2022-11-03 03:43:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13690 states, 9646 states have (on average 1.4205888451171471) internal successors, (13703), 9773 states have internal predecessors, (13703), 3418 states have call successors, (3418), 626 states have call predecessors, (3418), 625 states have return successors, (3417), 3386 states have call predecessors, (3417), 3417 states have call successors, (3417) [2022-11-03 03:43:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13690 states to 13690 states and 20538 transitions. [2022-11-03 03:43:25,696 INFO L78 Accepts]: Start accepts. Automaton has 13690 states and 20538 transitions. Word has length 3004 [2022-11-03 03:43:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:25,704 INFO L495 AbstractCegarLoop]: Abstraction has 13690 states and 20538 transitions. [2022-11-03 03:43:25,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 2 states have call successors, (268), 2 states have call predecessors, (268), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13690 states and 20538 transitions. [2022-11-03 03:43:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3007 [2022-11-03 03:43:25,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:25,783 INFO L195 NwaCegarLoop]: trace histogram [239, 239, 239, 239, 239, 239, 239, 239, 239, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:25,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:43:25,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:25,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash 864289821, now seen corresponding path program 1 times [2022-11-03 03:43:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:25,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696402191] [2022-11-03 03:43:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:25,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 285238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285238 trivial. 0 not checked. [2022-11-03 03:43:30,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:30,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696402191] [2022-11-03 03:43:30,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696402191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:30,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:30,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772800683] [2022-11-03 03:43:30,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:30,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:30,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:30,426 INFO L87 Difference]: Start difference. First operand 13690 states and 20538 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:32,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:34,600 INFO L93 Difference]: Finished difference Result 39937 states and 59917 transitions. [2022-11-03 03:43:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:34,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) Word has length 3006 [2022-11-03 03:43:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:34,800 INFO L225 Difference]: With dead ends: 39937 [2022-11-03 03:43:34,800 INFO L226 Difference]: Without dead ends: 26777 [2022-11-03 03:43:34,885 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 03:43:34,890 INFO L413 NwaCegarLoop]: 3630 mSDtfsCounter, 2492 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 6784 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:34,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2492 Valid, 6784 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 03:43:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26777 states. [2022-11-03 03:43:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26777 to 26770. [2022-11-03 03:43:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26770 states, 18970 states have (on average 1.4264101212440696) internal successors, (27059), 19225 states have internal predecessors, (27059), 6550 states have call successors, (6550), 1250 states have call predecessors, (6550), 1249 states have return successors, (6549), 6486 states have call predecessors, (6549), 6549 states have call successors, (6549) [2022-11-03 03:43:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26770 states to 26770 states and 40158 transitions. [2022-11-03 03:43:37,039 INFO L78 Accepts]: Start accepts. Automaton has 26770 states and 40158 transitions. Word has length 3006 [2022-11-03 03:43:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:37,044 INFO L495 AbstractCegarLoop]: Abstraction has 26770 states and 40158 transitions. [2022-11-03 03:43:37,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 26770 states and 40158 transitions. [2022-11-03 03:43:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3008 [2022-11-03 03:43:37,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:37,293 INFO L195 NwaCegarLoop]: trace histogram [239, 239, 239, 239, 239, 239, 239, 239, 239, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:37,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:43:37,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:37,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1795101245, now seen corresponding path program 1 times [2022-11-03 03:43:37,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:37,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879769282] [2022-11-03 03:43:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:37,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 285238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285238 trivial. 0 not checked. [2022-11-03 03:43:41,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:41,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879769282] [2022-11-03 03:43:41,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879769282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:41,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:41,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:41,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910052539] [2022-11-03 03:43:41,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:41,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:41,477 INFO L87 Difference]: Start difference. First operand 26770 states and 40158 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:43,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:46,394 INFO L93 Difference]: Finished difference Result 79013 states and 118509 transitions. [2022-11-03 03:43:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) Word has length 3007 [2022-11-03 03:43:46,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:46,716 INFO L225 Difference]: With dead ends: 79013 [2022-11-03 03:43:46,716 INFO L226 Difference]: Without dead ends: 52773 [2022-11-03 03:43:46,860 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 03:43:46,863 INFO L413 NwaCegarLoop]: 3636 mSDtfsCounter, 2478 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 6787 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:46,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2478 Valid, 6787 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 03:43:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52773 states. [2022-11-03 03:43:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52773 to 52754. [2022-11-03 03:43:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52754 states, 37498 states have (on average 1.429276228065497) internal successors, (53595), 38009 states have internal predecessors, (53595), 12758 states have call successors, (12758), 2498 states have call predecessors, (12758), 2497 states have return successors, (12757), 12630 states have call predecessors, (12757), 12757 states have call successors, (12757) [2022-11-03 03:43:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52754 states to 52754 states and 79110 transitions. [2022-11-03 03:43:50,176 INFO L78 Accepts]: Start accepts. Automaton has 52754 states and 79110 transitions. Word has length 3007 [2022-11-03 03:43:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:50,181 INFO L495 AbstractCegarLoop]: Abstraction has 52754 states and 79110 transitions. [2022-11-03 03:43:50,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:50,182 INFO L276 IsEmpty]: Start isEmpty. Operand 52754 states and 79110 transitions. [2022-11-03 03:43:50,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3009 [2022-11-03 03:43:50,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:50,517 INFO L195 NwaCegarLoop]: trace histogram [239, 239, 239, 239, 239, 239, 239, 239, 239, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:50,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:43:50,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2002009689, now seen corresponding path program 1 times [2022-11-03 03:43:50,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:50,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128382942] [2022-11-03 03:43:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:50,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 285238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285238 trivial. 0 not checked. [2022-11-03 03:43:54,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:54,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128382942] [2022-11-03 03:43:54,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128382942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:54,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:54,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:54,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28132341] [2022-11-03 03:43:54,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:54,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:54,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:54,382 INFO L87 Difference]: Start difference. First operand 52754 states and 79110 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:43:56,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:01,060 INFO L93 Difference]: Finished difference Result 156933 states and 235333 transitions. [2022-11-03 03:44:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) Word has length 3008 [2022-11-03 03:44:01,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:01,803 INFO L225 Difference]: With dead ends: 156933 [2022-11-03 03:44:01,804 INFO L226 Difference]: Without dead ends: 104709 [2022-11-03 03:44:02,079 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 03:44:02,080 INFO L413 NwaCegarLoop]: 3652 mSDtfsCounter, 2484 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2484 SdHoareTripleChecker+Valid, 6806 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:02,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2484 Valid, 6806 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:44:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104709 states. [2022-11-03 03:44:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104709 to 104690. [2022-11-03 03:44:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104690 states, 74522 states have (on average 1.4307050267035237) internal successors, (106619), 75545 states have internal predecessors, (106619), 25174 states have call successors, (25174), 4994 states have call predecessors, (25174), 4993 states have return successors, (25173), 24918 states have call predecessors, (25173), 25173 states have call successors, (25173) [2022-11-03 03:44:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104690 states to 104690 states and 156966 transitions. [2022-11-03 03:44:07,772 INFO L78 Accepts]: Start accepts. Automaton has 104690 states and 156966 transitions. Word has length 3008 [2022-11-03 03:44:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:07,776 INFO L495 AbstractCegarLoop]: Abstraction has 104690 states and 156966 transitions. [2022-11-03 03:44:07,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:44:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 104690 states and 156966 transitions. [2022-11-03 03:44:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3011 [2022-11-03 03:44:07,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:07,852 INFO L195 NwaCegarLoop]: trace histogram [239, 239, 239, 239, 239, 239, 239, 239, 239, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:44:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:44:07,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:07,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1459177013, now seen corresponding path program 1 times [2022-11-03 03:44:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:07,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734925807] [2022-11-03 03:44:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:07,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 285238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285238 trivial. 0 not checked. [2022-11-03 03:44:12,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:12,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734925807] [2022-11-03 03:44:12,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734925807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:12,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:12,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:12,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503767279] [2022-11-03 03:44:12,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:12,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:12,953 INFO L87 Difference]: Start difference. First operand 104690 states and 156966 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 2 states have call successors, (269), 2 states have call predecessors, (269), 1 states have return successors, (265), 1 states have call predecessors, (265), 1 states have call successors, (265) [2022-11-03 03:44:15,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []