./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--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:22:29,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:22:29,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:22:29,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:22:29,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:22:29,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:22:29,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:22:29,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:22:29,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:22:29,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:22:29,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:22:29,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:22:29,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:22:29,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:22:29,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:22:29,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:22:29,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:22:29,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:22:29,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:22:29,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:22:29,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:22:29,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:22:29,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:22:29,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:22:29,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:22:29,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:22:29,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:22:29,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:22:29,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:22:29,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:22:29,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:22:29,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:22:29,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:22:29,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:22:29,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:22:29,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:22:29,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:22:29,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:22:29,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:22:29,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:22:29,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:22:29,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:22:29,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:22:29,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:22:29,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:22:29,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:22:29,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:22:29,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:22:29,190 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:22:29,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:22:29,191 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:22:29,191 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:22:29,192 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:22:29,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:22:29,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:22:29,193 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:22:29,193 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:22:29,193 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:22:29,193 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:22:29,193 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:22:29,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:22:29,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:22:29,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:22:29,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:22:29,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:22:29,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:22:29,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:22:29,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:22:29,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:22:29,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:22:29,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:22:29,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:29,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:22:29,203 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:22:29,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:22:29,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:22:29,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:22:29,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:22:29,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:22:29,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:22:29,204 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_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 [2022-11-23 14:22:29,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:22:29,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:22:29,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:22:29,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:22:29,550 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:22:29,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-23 14:22:32,702 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:22:33,425 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:22:33,425 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-23 14:22:33,464 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/data/6826e9c9a/de3bb72cb8064eb0af98ecbd32d0d857/FLAG43af8a729 [2022-11-23 14:22:33,484 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/data/6826e9c9a/de3bb72cb8064eb0af98ecbd32d0d857 [2022-11-23 14:22:33,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:22:33,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:22:33,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:33,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:22:33,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:22:33,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:33" (1/1) ... [2022-11-23 14:22:33,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78465b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:33, skipping insertion in model container [2022-11-23 14:22:33,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:33" (1/1) ... [2022-11-23 14:22:33,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:22:33,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:22:36,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2022-11-23 14:22:36,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:36,871 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:22:37,400 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2022-11-23 14:22:37,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:37,600 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:22:37,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37 WrapperNode [2022-11-23 14:22:37,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:37,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:37,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:22:37,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:22:37,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:37,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,014 INFO L138 Inliner]: procedures = 341, calls = 3956, calls flagged for inlining = 136, calls inlined = 92, statements flattened = 5415 [2022-11-23 14:22:38,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:38,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:22:38,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:22:38,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:22:38,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,249 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:22:38,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:22:38,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:22:38,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:22:38,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (1/1) ... [2022-11-23 14:22:38,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:38,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:38,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:22:38,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69770a08-8721-4ea2-b715-5fb0d930d8ea/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:22:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2022-11-23 14:22:38,450 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2022-11-23 14:22:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2022-11-23 14:22:38,450 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2022-11-23 14:22:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-23 14:22:38,450 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-23 14:22:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2022-11-23 14:22:38,451 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2022-11-23 14:22:38,451 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-23 14:22:38,451 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-23 14:22:38,451 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2022-11-23 14:22:38,451 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2022-11-23 14:22:38,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:22:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:22:38,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:22:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:22:38,452 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-11-23 14:22:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-11-23 14:22:38,452 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2022-11-23 14:22:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2022-11-23 14:22:38,453 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2022-11-23 14:22:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2022-11-23 14:22:38,453 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-11-23 14:22:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-11-23 14:22:38,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-23 14:22:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-23 14:22:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:22:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:22:38,455 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2022-11-23 14:22:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2022-11-23 14:22:38,455 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2022-11-23 14:22:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2022-11-23 14:22:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2022-11-23 14:22:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2022-11-23 14:22:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure freeurbs [2022-11-23 14:22:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure freeurbs [2022-11-23 14:22:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_bchannel_down [2022-11-23 14:22:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_bchannel_down [2022-11-23 14:22:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-23 14:22:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-23 14:22:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:22:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:22:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2022-11-23 14:22:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2022-11-23 14:22:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:22:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:22:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2022-11-23 14:22:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2022-11-23 14:22:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:22:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:22:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 14:22:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 14:22:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2022-11-23 14:22:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2022-11-23 14:22:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-23 14:22:38,460 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-23 14:22:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure usb_queue_reset_device [2022-11-23 14:22:38,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_queue_reset_device [2022-11-23 14:22:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:22:38,460 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:22:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-23 14:22:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-23 14:22:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2022-11-23 14:22:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2022-11-23 14:22:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2022-11-23 14:22:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2022-11-23 14:22:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_3 [2022-11-23 14:22:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_3 [2022-11-23 14:22:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:22:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_5 [2022-11-23 14:22:38,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_5 [2022-11-23 14:22:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:22:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:22:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-23 14:22:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-23 14:22:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure check_pending [2022-11-23 14:22:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure check_pending [2022-11-23 14:22:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:22:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:22:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure error_hangup [2022-11-23 14:22:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure error_hangup [2022-11-23 14:22:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2022-11-23 14:22:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2022-11-23 14:22:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_isoc_send_skb [2022-11-23 14:22:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_isoc_send_skb [2022-11-23 14:22:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2022-11-23 14:22:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2022-11-23 14:22:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:22:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:22:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2022-11-23 14:22:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2022-11-23 14:22:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:22:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2022-11-23 14:22:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2022-11-23 14:22:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:22:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-23 14:22:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-23 14:22:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 14:22:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 14:22:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:22:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:22:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure complete_cb [2022-11-23 14:22:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_cb [2022-11-23 14:22:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-23 14:22:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-23 14:22:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure stopurbs [2022-11-23 14:22:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure stopurbs [2022-11-23 14:22:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2022-11-23 14:22:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2022-11-23 14:22:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:22:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:22:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_3 [2022-11-23 14:22:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_3 [2022-11-23 14:22:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2022-11-23 14:22:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2022-11-23 14:22:38,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:22:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure dump_urb [2022-11-23 14:22:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_urb [2022-11-23 14:22:38,477 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 14:22:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 14:22:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-23 14:22:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-23 14:22:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2022-11-23 14:22:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2022-11-23 14:22:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_3 [2022-11-23 14:22:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_3 [2022-11-23 14:22:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-23 14:22:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-23 14:22:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 14:22:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 14:22:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-23 14:22:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-23 14:22:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2022-11-23 14:22:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2022-11-23 14:22:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:22:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:22:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:22:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure get_usb_rcmsg [2022-11-23 14:22:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure get_usb_rcmsg [2022-11-23 14:22:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:22:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:22:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2022-11-23 14:22:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2022-11-23 14:22:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:22:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:22:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:22:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:22:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:22:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 14:22:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 14:22:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2022-11-23 14:22:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2022-11-23 14:22:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2022-11-23 14:22:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2022-11-23 14:22:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_isoc_input [2022-11-23 14:22:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_isoc_input [2022-11-23 14:22:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2022-11-23 14:22:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2022-11-23 14:22:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:22:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2022-11-23 14:22:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2022-11-23 14:22:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:22:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-11-23 14:22:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-11-23 14:22:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-23 14:22:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-23 14:22:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-23 14:22:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-23 14:22:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 14:22:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 14:22:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2022-11-23 14:22:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2022-11-23 14:22:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 14:22:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 14:22:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-23 14:22:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-23 14:22:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-23 14:22:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-23 14:22:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure update_basstate [2022-11-23 14:22:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure update_basstate [2022-11-23 14:22:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-23 14:22:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-23 14:22:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:22:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2022-11-23 14:22:38,491 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2022-11-23 14:22:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2022-11-23 14:22:38,491 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2022-11-23 14:22:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-23 14:22:38,492 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-23 14:22:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:22:38,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:22:39,321 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:22:39,327 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:22:39,662 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:22:46,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:22:47,873 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:22:47,874 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:22:47,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:47 BoogieIcfgContainer [2022-11-23 14:22:47,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:22:47,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:22:47,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:22:47,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:22:47,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:33" (1/3) ... [2022-11-23 14:22:47,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dedef0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:47, skipping insertion in model container [2022-11-23 14:22:47,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:37" (2/3) ... [2022-11-23 14:22:47,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dedef0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:47, skipping insertion in model container [2022-11-23 14:22:47,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:47" (3/3) ... [2022-11-23 14:22:47,888 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-23 14:22:47,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:22:47,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:22:48,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:22:48,020 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;@4293a97c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:22:48,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:22:48,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 1254 states, 768 states have (on average 1.36328125) internal successors, (1047), 812 states have internal predecessors, (1047), 396 states have call successors, (396), 89 states have call predecessors, (396), 88 states have return successors, (387), 368 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-23 14:22:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-23 14:22:48,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:48,066 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:48,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:48,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash -665888164, now seen corresponding path program 1 times [2022-11-23 14:22:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:48,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797039850] [2022-11-23 14:22:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:48,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-23 14:22:49,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:49,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797039850] [2022-11-23 14:22:49,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797039850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:49,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:49,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:22:49,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001149275] [2022-11-23 14:22:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:49,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:49,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:49,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:49,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:49,419 INFO L87 Difference]: Start difference. First operand has 1254 states, 768 states have (on average 1.36328125) internal successors, (1047), 812 states have internal predecessors, (1047), 396 states have call successors, (396), 89 states have call predecessors, (396), 88 states have return successors, (387), 368 states have call predecessors, (387), 387 states have call successors, (387) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:22:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:52,534 INFO L93 Difference]: Finished difference Result 3442 states and 5151 transitions. [2022-11-23 14:22:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:52,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2022-11-23 14:22:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:52,585 INFO L225 Difference]: With dead ends: 3442 [2022-11-23 14:22:52,585 INFO L226 Difference]: Without dead ends: 2128 [2022-11-23 14:22:52,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:52,606 INFO L413 NwaCegarLoop]: 1961 mSDtfsCounter, 1428 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:52,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 3533 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 14:22:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2022-11-23 14:22:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2125. [2022-11-23 14:22:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 1323 states have (on average 1.363567649281935) internal successors, (1804), 1389 states have internal predecessors, (1804), 645 states have call successors, (645), 157 states have call predecessors, (645), 156 states have return successors, (644), 606 states have call predecessors, (644), 644 states have call successors, (644) [2022-11-23 14:22:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3093 transitions. [2022-11-23 14:22:52,867 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3093 transitions. Word has length 125 [2022-11-23 14:22:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:52,870 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3093 transitions. [2022-11-23 14:22:52,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:22:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3093 transitions. [2022-11-23 14:22:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 14:22:52,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:52,880 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:22:52,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2072697795, now seen corresponding path program 1 times [2022-11-23 14:22:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:52,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447575958] [2022-11-23 14:22:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-23 14:22:53,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:53,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447575958] [2022-11-23 14:22:53,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447575958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:53,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:53,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:22:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844327838] [2022-11-23 14:22:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:53,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:53,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:53,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:53,710 INFO L87 Difference]: Start difference. First operand 2125 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-23 14:22:57,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:57,575 INFO L93 Difference]: Finished difference Result 5416 states and 7874 transitions. [2022-11-23 14:22:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:57,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2022-11-23 14:22:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:57,598 INFO L225 Difference]: With dead ends: 5416 [2022-11-23 14:22:57,599 INFO L226 Difference]: Without dead ends: 3316 [2022-11-23 14:22:57,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:57,610 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 1093 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:57,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 3219 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 14:22:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2022-11-23 14:22:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3313. [2022-11-23 14:22:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 2072 states have (on average 1.369208494208494) internal successors, (2837), 2196 states have internal predecessors, (2837), 988 states have call successors, (988), 253 states have call predecessors, (988), 252 states have return successors, (987), 913 states have call predecessors, (987), 987 states have call successors, (987) [2022-11-23 14:22:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 4812 transitions. [2022-11-23 14:22:57,779 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 4812 transitions. Word has length 126 [2022-11-23 14:22:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:57,780 INFO L495 AbstractCegarLoop]: Abstraction has 3313 states and 4812 transitions. [2022-11-23 14:22:57,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-23 14:22:57,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 4812 transitions. [2022-11-23 14:22:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-23 14:22:57,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:57,786 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:57,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:22:57,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:57,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:57,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1949823380, now seen corresponding path program 1 times [2022-11-23 14:22:57,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:57,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512322459] [2022-11-23 14:22:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:57,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-23 14:22:58,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:58,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512322459] [2022-11-23 14:22:58,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512322459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:58,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:58,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:22:58,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675433257] [2022-11-23 14:22:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:58,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:58,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:58,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:58,450 INFO L87 Difference]: Start difference. First operand 3313 states and 4812 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:23:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:01,059 INFO L93 Difference]: Finished difference Result 3692 states and 5310 transitions. [2022-11-23 14:23:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:23:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-11-23 14:23:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:01,088 INFO L225 Difference]: With dead ends: 3692 [2022-11-23 14:23:01,088 INFO L226 Difference]: Without dead ends: 3689 [2022-11-23 14:23:01,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:23:01,096 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1503 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:01,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1943 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 14:23:01,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2022-11-23 14:23:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3645. [2022-11-23 14:23:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2296 states have (on average 1.3767421602787457) internal successors, (3161), 2426 states have internal predecessors, (3161), 1038 states have call successors, (1038), 319 states have call predecessors, (1038), 310 states have return successors, (1039), 953 states have call predecessors, (1039), 1037 states have call successors, (1039) [2022-11-23 14:23:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5238 transitions. [2022-11-23 14:23:01,352 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5238 transitions. Word has length 129 [2022-11-23 14:23:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:01,353 INFO L495 AbstractCegarLoop]: Abstraction has 3645 states and 5238 transitions. [2022-11-23 14:23:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:23:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5238 transitions. [2022-11-23 14:23:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-23 14:23:01,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:01,362 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:01,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:23:01,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1409618286, now seen corresponding path program 1 times [2022-11-23 14:23:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:01,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450583202] [2022-11-23 14:23:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-23 14:23:02,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:02,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450583202] [2022-11-23 14:23:02,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450583202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:02,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:02,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:02,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095744792] [2022-11-23 14:23:02,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:02,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:02,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:02,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:02,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:02,495 INFO L87 Difference]: Start difference. First operand 3645 states and 5238 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:07,339 INFO L93 Difference]: Finished difference Result 7252 states and 10423 transitions. [2022-11-23 14:23:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:23:07,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 164 [2022-11-23 14:23:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:07,362 INFO L225 Difference]: With dead ends: 7252 [2022-11-23 14:23:07,363 INFO L226 Difference]: Without dead ends: 3643 [2022-11-23 14:23:07,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:07,380 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 2739 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:07,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2739 Valid, 1577 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 14:23:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2022-11-23 14:23:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3643. [2022-11-23 14:23:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 2297 states have (on average 1.3730953417501088) internal successors, (3154), 2423 states have internal predecessors, (3154), 1034 states have call successors, (1034), 320 states have call predecessors, (1034), 311 states have return successors, (1035), 953 states have call predecessors, (1035), 1033 states have call successors, (1035) [2022-11-23 14:23:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5223 transitions. [2022-11-23 14:23:07,614 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5223 transitions. Word has length 164 [2022-11-23 14:23:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:07,617 INFO L495 AbstractCegarLoop]: Abstraction has 3643 states and 5223 transitions. [2022-11-23 14:23:07,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5223 transitions. [2022-11-23 14:23:07,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-23 14:23:07,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:07,623 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:07,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:23:07,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:07,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:07,623 INFO L85 PathProgramCache]: Analyzing trace with hash -879671559, now seen corresponding path program 1 times [2022-11-23 14:23:07,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:07,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001163987] [2022-11-23 14:23:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:07,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-23 14:23:08,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:08,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001163987] [2022-11-23 14:23:08,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001163987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:08,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:08,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:08,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263526454] [2022-11-23 14:23:08,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:08,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:08,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:08,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:08,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:08,408 INFO L87 Difference]: Start difference. First operand 3643 states and 5223 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:10,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:16,304 INFO L93 Difference]: Finished difference Result 14434 states and 21015 transitions. [2022-11-23 14:23:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:23:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2022-11-23 14:23:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:16,365 INFO L225 Difference]: With dead ends: 14434 [2022-11-23 14:23:16,366 INFO L226 Difference]: Without dead ends: 10829 [2022-11-23 14:23:16,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:16,382 INFO L413 NwaCegarLoop]: 2307 mSDtfsCounter, 3458 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 6050 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:16,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3458 Valid, 6050 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 14:23:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10829 states. [2022-11-23 14:23:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10829 to 10787. [2022-11-23 14:23:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10787 states, 6833 states have (on average 1.3742133762622566) internal successors, (9390), 7183 states have internal predecessors, (9390), 3046 states have call successors, (3046), 932 states have call predecessors, (3046), 907 states have return successors, (3331), 2813 states have call predecessors, (3331), 3045 states have call successors, (3331) [2022-11-23 14:23:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10787 states to 10787 states and 15767 transitions. [2022-11-23 14:23:17,099 INFO L78 Accepts]: Start accepts. Automaton has 10787 states and 15767 transitions. Word has length 158 [2022-11-23 14:23:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:17,100 INFO L495 AbstractCegarLoop]: Abstraction has 10787 states and 15767 transitions. [2022-11-23 14:23:17,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:17,101 INFO L276 IsEmpty]: Start isEmpty. Operand 10787 states and 15767 transitions. [2022-11-23 14:23:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-23 14:23:17,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:17,105 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:17,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:23:17,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:17,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash -825315226, now seen corresponding path program 1 times [2022-11-23 14:23:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:17,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366540288] [2022-11-23 14:23:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-23 14:23:18,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:18,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366540288] [2022-11-23 14:23:18,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366540288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:18,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:18,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437351250] [2022-11-23 14:23:18,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:18,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:18,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:18,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:18,096 INFO L87 Difference]: Start difference. First operand 10787 states and 15767 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:20,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:22,372 INFO L93 Difference]: Finished difference Result 21524 states and 31455 transitions. [2022-11-23 14:23:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:23:22,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2022-11-23 14:23:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:22,437 INFO L225 Difference]: With dead ends: 21524 [2022-11-23 14:23:22,437 INFO L226 Difference]: Without dead ends: 10775 [2022-11-23 14:23:22,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:22,479 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1718 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:22,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 1639 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 14:23:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10775 states. [2022-11-23 14:23:23,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10775 to 10775. [2022-11-23 14:23:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10775 states, 6833 states have (on average 1.3724571930338065) internal successors, (9378), 7171 states have internal predecessors, (9378), 3034 states have call successors, (3034), 932 states have call predecessors, (3034), 907 states have return successors, (3311), 2813 states have call predecessors, (3311), 3033 states have call successors, (3311) [2022-11-23 14:23:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10775 states to 10775 states and 15723 transitions. [2022-11-23 14:23:23,280 INFO L78 Accepts]: Start accepts. Automaton has 10775 states and 15723 transitions. Word has length 162 [2022-11-23 14:23:23,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:23,281 INFO L495 AbstractCegarLoop]: Abstraction has 10775 states and 15723 transitions. [2022-11-23 14:23:23,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 10775 states and 15723 transitions. [2022-11-23 14:23:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 14:23:23,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:23,285 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:23,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:23:23,285 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:23,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1572483142, now seen corresponding path program 1 times [2022-11-23 14:23:23,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:23,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944570316] [2022-11-23 14:23:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:23,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-23 14:23:24,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:24,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944570316] [2022-11-23 14:23:24,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944570316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:24,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:24,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:24,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007357160] [2022-11-23 14:23:24,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:24,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:24,082 INFO L87 Difference]: Start difference. First operand 10775 states and 15723 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:26,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:33,942 INFO L93 Difference]: Finished difference Result 42946 states and 63927 transitions. [2022-11-23 14:23:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:23:33,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2022-11-23 14:23:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:34,134 INFO L225 Difference]: With dead ends: 42946 [2022-11-23 14:23:34,134 INFO L226 Difference]: Without dead ends: 32209 [2022-11-23 14:23:34,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:34,182 INFO L413 NwaCegarLoop]: 2290 mSDtfsCounter, 3451 mSDsluCounter, 3723 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3451 SdHoareTripleChecker+Valid, 6013 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:34,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3451 Valid, 6013 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 14:23:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32209 states. [2022-11-23 14:23:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32209 to 32167. [2022-11-23 14:23:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32167 states, 20441 states have (on average 1.371850692236192) internal successors, (28042), 21411 states have internal predecessors, (28042), 9030 states have call successors, (9030), 2768 states have call predecessors, (9030), 2695 states have return successors, (11087), 8393 states have call predecessors, (11087), 9029 states have call successors, (11087) [2022-11-23 14:23:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32167 states to 32167 states and 48159 transitions. [2022-11-23 14:23:36,718 INFO L78 Accepts]: Start accepts. Automaton has 32167 states and 48159 transitions. Word has length 159 [2022-11-23 14:23:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:36,719 INFO L495 AbstractCegarLoop]: Abstraction has 32167 states and 48159 transitions. [2022-11-23 14:23:36,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 32167 states and 48159 transitions. [2022-11-23 14:23:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-23 14:23:36,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:36,724 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:36,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:23:36,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:36,725 INFO L85 PathProgramCache]: Analyzing trace with hash 984268448, now seen corresponding path program 1 times [2022-11-23 14:23:36,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:36,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554547657] [2022-11-23 14:23:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-23 14:23:37,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:37,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554547657] [2022-11-23 14:23:37,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554547657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:37,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:37,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974793347] [2022-11-23 14:23:37,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:37,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:37,541 INFO L87 Difference]: Start difference. First operand 32167 states and 48159 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:38,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:43,533 INFO L93 Difference]: Finished difference Result 64260 states and 96135 transitions. [2022-11-23 14:23:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:23:43,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2022-11-23 14:23:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:43,703 INFO L225 Difference]: With dead ends: 64260 [2022-11-23 14:23:43,703 INFO L226 Difference]: Without dead ends: 32131 [2022-11-23 14:23:43,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:43,800 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 2732 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2732 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:43,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2732 Valid, 1571 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 14:23:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32131 states. [2022-11-23 14:23:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32131 to 32131. [2022-11-23 14:23:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32131 states, 20441 states have (on average 1.3700895259527421) internal successors, (28006), 21375 states have internal predecessors, (28006), 8994 states have call successors, (8994), 2768 states have call predecessors, (8994), 2695 states have return successors, (10987), 8393 states have call predecessors, (10987), 8993 states have call successors, (10987) [2022-11-23 14:23:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32131 states to 32131 states and 47987 transitions. [2022-11-23 14:23:46,114 INFO L78 Accepts]: Start accepts. Automaton has 32131 states and 47987 transitions. Word has length 163 [2022-11-23 14:23:46,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:46,115 INFO L495 AbstractCegarLoop]: Abstraction has 32131 states and 47987 transitions. [2022-11-23 14:23:46,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 32131 states and 47987 transitions. [2022-11-23 14:23:46,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-23 14:23:46,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:46,120 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:46,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:23:46,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:46,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:46,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1873392168, now seen corresponding path program 1 times [2022-11-23 14:23:46,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:46,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951328476] [2022-11-23 14:23:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:46,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-23 14:23:47,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:47,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951328476] [2022-11-23 14:23:47,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951328476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:47,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:47,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:47,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844887970] [2022-11-23 14:23:47,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:47,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:47,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:47,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:47,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:47,248 INFO L87 Difference]: Start difference. First operand 32131 states and 47987 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:49,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:52,231 INFO L93 Difference]: Finished difference Result 62928 states and 93677 transitions. [2022-11-23 14:23:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:23:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 165 [2022-11-23 14:23:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:52,394 INFO L225 Difference]: With dead ends: 62928 [2022-11-23 14:23:52,394 INFO L226 Difference]: Without dead ends: 30835 [2022-11-23 14:23:52,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:52,497 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 1683 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:52,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 1607 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 14:23:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30835 states. [2022-11-23 14:23:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30835 to 30835. [2022-11-23 14:23:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30835 states, 19703 states have (on average 1.3711617520174593) internal successors, (27016), 20529 states have internal predecessors, (27016), 8490 states have call successors, (8490), 2696 states have call predecessors, (8490), 2641 states have return successors, (10195), 7943 states have call predecessors, (10195), 8489 states have call successors, (10195) [2022-11-23 14:23:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30835 states to 30835 states and 45701 transitions. [2022-11-23 14:23:54,702 INFO L78 Accepts]: Start accepts. Automaton has 30835 states and 45701 transitions. Word has length 165 [2022-11-23 14:23:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:54,702 INFO L495 AbstractCegarLoop]: Abstraction has 30835 states and 45701 transitions. [2022-11-23 14:23:54,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 30835 states and 45701 transitions. [2022-11-23 14:23:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-23 14:23:54,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:54,707 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:23:54,707 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -58061458, now seen corresponding path program 1 times [2022-11-23 14:23:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:54,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502100157] [2022-11-23 14:23:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:54,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-23 14:23:55,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:55,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502100157] [2022-11-23 14:23:55,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502100157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:55,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:55,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:23:55,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328022508] [2022-11-23 14:23:55,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:55,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:23:55,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:23:55,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:23:55,451 INFO L87 Difference]: Start difference. First operand 30835 states and 45701 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:23:56,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:23:57,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:09,346 INFO L93 Difference]: Finished difference Result 123138 states and 185307 transitions. [2022-11-23 14:24:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:24:09,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2022-11-23 14:24:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:10,006 INFO L225 Difference]: With dead ends: 123138 [2022-11-23 14:24:10,008 INFO L226 Difference]: Without dead ends: 92341 [2022-11-23 14:24:10,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:24:10,123 INFO L413 NwaCegarLoop]: 2240 mSDtfsCounter, 3379 mSDsluCounter, 3736 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3379 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:10,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3379 Valid, 5976 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-23 14:24:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92341 states. [2022-11-23 14:24:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92341 to 92155. [2022-11-23 14:24:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92155 states, 58907 states have (on average 1.3684621522060196) internal successors, (80612), 61293 states have internal predecessors, (80612), 25350 states have call successors, (25350), 8060 states have call predecessors, (25350), 7897 states have return successors, (33255), 23783 states have call predecessors, (33255), 25349 states have call successors, (33255) [2022-11-23 14:24:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92155 states to 92155 states and 139217 transitions. [2022-11-23 14:24:16,411 INFO L78 Accepts]: Start accepts. Automaton has 92155 states and 139217 transitions. Word has length 161 [2022-11-23 14:24:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:16,411 INFO L495 AbstractCegarLoop]: Abstraction has 92155 states and 139217 transitions. [2022-11-23 14:24:16,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:24:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 92155 states and 139217 transitions. [2022-11-23 14:24:16,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 14:24:16,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:16,416 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:16,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:24:16,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash 442698337, now seen corresponding path program 1 times [2022-11-23 14:24:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:16,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294742088] [2022-11-23 14:24:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:16,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-23 14:24:17,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:17,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294742088] [2022-11-23 14:24:17,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294742088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:17,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:17,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:24:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96601570] [2022-11-23 14:24:17,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:17,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:24:17,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:24:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:24:17,201 INFO L87 Difference]: Start difference. First operand 92155 states and 139217 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:24:19,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []