./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:06:57,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:06:57,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:06:57,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:06:57,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:06:57,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:06:57,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:06:57,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:06:57,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:06:57,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:06:57,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:06:57,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:06:57,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:06:57,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:06:57,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:06:57,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:06:57,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:06:57,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:06:57,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:06:57,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:06:57,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:06:57,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:06:57,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:06:57,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:06:57,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:06:57,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:06:57,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:06:57,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:06:57,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:06:57,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:06:57,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:06:57,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:06:57,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:06:57,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:06:57,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:06:57,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:06:57,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:06:57,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:06:57,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:06:57,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:06:57,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:06:57,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:06:57,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:06:57,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:06:57,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:06:57,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:06:57,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:06:57,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:06:57,553 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:06:57,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:06:57,553 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:06:57,554 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:06:57,554 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:06:57,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:06:57,555 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:06:57,555 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:06:57,555 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:06:57,555 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:06:57,556 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:06:57,556 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:06:57,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:06:57,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:06:57,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:06:57,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:06:57,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:06:57,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:06:57,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:06:57,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:06:57,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:06:57,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:06:57,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:06:57,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:57,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:06:57,560 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:06:57,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:06:57,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:06:57,561 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:06:57,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:06:57,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:06:57,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:06:57,562 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_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf [2022-11-03 04:06:57,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:06:57,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:06:57,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:06:57,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:06:57,960 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:06:57,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-11-03 04:06:58,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/data/a7cee6120/481fcb03308145cb8406a0a11d79cfdf/FLAGe0cdd431d [2022-11-03 04:06:59,020 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:06:59,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-11-03 04:06:59,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/data/a7cee6120/481fcb03308145cb8406a0a11d79cfdf/FLAGe0cdd431d [2022-11-03 04:06:59,423 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/data/a7cee6120/481fcb03308145cb8406a0a11d79cfdf [2022-11-03 04:06:59,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:06:59,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:06:59,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:59,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:06:59,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:06:59,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:06:59,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90f30e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59, skipping insertion in model container [2022-11-03 04:06:59,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:59" (1/1) ... [2022-11-03 04:06:59,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:06:59,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:07:00,290 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2022-11-03 04:07:00,290 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2022-11-03 04:07:00,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2022-11-03 04:07:02,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:07:02,184 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:07:02,401 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2022-11-03 04:07:02,401 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2022-11-03 04:07:02,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2022-11-03 04:07:02,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:07:02,938 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:07:02,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02 WrapperNode [2022-11-03 04:07:02,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:07:02,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:07:02,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:07:02,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:07:02,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,334 INFO L138 Inliner]: procedures = 281, calls = 1587, calls flagged for inlining = 160, calls inlined = 157, statements flattened = 4353 [2022-11-03 04:07:03,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:07:03,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:07:03,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:07:03,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:07:03,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,581 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:07:03,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:07:03,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:07:03,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:07:03,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (1/1) ... [2022-11-03 04:07:03,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:07:03,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:03,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:07:03,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:07:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rxfilter [2022-11-03 04:07:03,812 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rxfilter [2022-11-03 04:07:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-03 04:07:03,812 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-03 04:07:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 04:07:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 04:07:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:07:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:07:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 04:07:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 04:07:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 04:07:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 04:07:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 04:07:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 04:07:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 04:07:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 04:07:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:07:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:07:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_reset [2022-11-03 04:07:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_reset [2022-11-03 04:07:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 04:07:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 04:07:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 04:07:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 04:07:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 04:07:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 04:07:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 04:07:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 04:07:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 04:07:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 04:07:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_default_phy [2022-11-03 04:07:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_default_phy [2022-11-03 04:07:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-03 04:07:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-03 04:07:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 04:07:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 04:07:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 04:07:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 04:07:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 04:07:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 04:07:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 04:07:03,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 04:07:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 04:07:03,820 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 04:07:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_check_mode [2022-11-03 04:07:03,821 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_check_mode [2022-11-03 04:07:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 04:07:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 04:07:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2022-11-03 04:07:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2022-11-03 04:07:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 04:07:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 04:07:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:07:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 04:07:03,823 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 04:07:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-03 04:07:03,824 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-03 04:07:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:07:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 04:07:03,824 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 04:07:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 04:07:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 04:07:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 04:07:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 04:07:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 04:07:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 04:07:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 04:07:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 04:07:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 04:07:03,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 04:07:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 04:07:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rx_ring [2022-11-03 04:07:03,827 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rx_ring [2022-11-03 04:07:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_remove [2022-11-03 04:07:03,827 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_remove [2022-11-03 04:07:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 04:07:03,828 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 04:07:03,828 INFO L130 BoogieDeclarations]: Found specification of procedure sis630_set_eq [2022-11-03 04:07:03,829 INFO L138 BoogieDeclarations]: Found implementation of procedure sis630_set_eq [2022-11-03 04:07:03,829 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_device [2022-11-03 04:07:03,829 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_device [2022-11-03 04:07:03,829 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 04:07:03,829 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 04:07:03,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:07:03,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:07:03,831 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 04:07:03,831 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 04:07:03,831 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-03 04:07:03,832 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-03 04:07:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 04:07:03,832 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 04:07:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_tx_ring [2022-11-03 04:07:03,832 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_tx_ring [2022-11-03 04:07:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 04:07:03,833 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 04:07:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 04:07:03,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 04:07:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2022-11-03 04:07:03,833 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2022-11-03 04:07:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 04:07:03,834 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 04:07:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 04:07:03,834 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 04:07:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-03 04:07:03,834 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-03 04:07:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_mode [2022-11-03 04:07:03,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_mode [2022-11-03 04:07:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:07:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_poll [2022-11-03 04:07:03,840 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_poll [2022-11-03 04:07:03,841 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-03 04:07:03,841 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-03 04:07:03,842 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 04:07:03,843 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 04:07:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 04:07:03,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 04:07:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-03 04:07:03,849 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-03 04:07:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 04:07:03,849 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 04:07:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 04:07:03,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 04:07:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 04:07:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 04:07:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-03 04:07:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-03 04:07:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 04:07:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 04:07:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:07:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 04:07:03,851 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 04:07:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_interrupt [2022-11-03 04:07:03,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_interrupt [2022-11-03 04:07:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:07:03,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:07:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_reset_phy [2022-11-03 04:07:03,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_reset_phy [2022-11-03 04:07:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_config [2022-11-03 04:07:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_config [2022-11-03 04:07:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:07:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2022-11-03 04:07:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2022-11-03 04:07:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:07:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_idle [2022-11-03 04:07:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_idle [2022-11-03 04:07:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:07:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-03 04:07:03,853 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-03 04:07:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 04:07:03,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 04:07:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-03 04:07:03,853 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-03 04:07:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 04:07:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 04:07:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_tx_timeout [2022-11-03 04:07:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_tx_timeout [2022-11-03 04:07:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 04:07:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 04:07:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ioctl [2022-11-03 04:07:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ioctl [2022-11-03 04:07:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 04:07:03,855 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 04:07:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 04:07:03,855 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 04:07:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:07:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-03 04:07:03,855 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-03 04:07:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:07:03,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:07:04,817 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:07:04,820 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:07:05,298 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:07:09,158 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:07:11,187 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:07:11,187 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:07:11,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:11 BoogieIcfgContainer [2022-11-03 04:07:11,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:07:11,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:07:11,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:07:11,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:07:11,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:59" (1/3) ... [2022-11-03 04:07:11,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6281f93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:11, skipping insertion in model container [2022-11-03 04:07:11,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:02" (2/3) ... [2022-11-03 04:07:11,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6281f93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:11, skipping insertion in model container [2022-11-03 04:07:11,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:11" (3/3) ... [2022-11-03 04:07:11,207 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-11-03 04:07:11,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:07:11,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:07:11,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:07:11,360 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;@324b96f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:07:11,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:07:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 1264 states, 748 states have (on average 1.3248663101604279) internal successors, (991), 775 states have internal predecessors, (991), 437 states have call successors, (437), 78 states have call predecessors, (437), 77 states have return successors, (430), 426 states have call predecessors, (430), 430 states have call successors, (430) [2022-11-03 04:07:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 04:07:11,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:11,408 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-03 04:07:11,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1443244859, now seen corresponding path program 1 times [2022-11-03 04:07:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:11,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627674039] [2022-11-03 04:07:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:11,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:07:12,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:12,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627674039] [2022-11-03 04:07:12,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627674039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:12,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:12,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:07:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741704929] [2022-11-03 04:07:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:12,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:07:12,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:07:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:07:12,492 INFO L87 Difference]: Start difference. First operand has 1264 states, 748 states have (on average 1.3248663101604279) internal successors, (991), 775 states have internal predecessors, (991), 437 states have call successors, (437), 78 states have call predecessors, (437), 77 states have return successors, (430), 426 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:07:15,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:18,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:20,177 INFO L93 Difference]: Finished difference Result 3567 states and 5270 transitions. [2022-11-03 04:07:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:20,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2022-11-03 04:07:20,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:20,211 INFO L225 Difference]: With dead ends: 3567 [2022-11-03 04:07:20,211 INFO L226 Difference]: Without dead ends: 2291 [2022-11-03 04:07:20,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:07:20,232 INFO L413 NwaCegarLoop]: 2200 mSDtfsCounter, 1525 mSDsluCounter, 6664 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 8228 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:20,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 8228 Invalid, 898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 891 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 04:07:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2022-11-03 04:07:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2277. [2022-11-03 04:07:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1359 states have (on average 1.3097866077998528) internal successors, (1780), 1396 states have internal predecessors, (1780), 770 states have call successors, (770), 148 states have call predecessors, (770), 147 states have return successors, (771), 757 states have call predecessors, (771), 769 states have call successors, (771) [2022-11-03 04:07:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3321 transitions. [2022-11-03 04:07:20,640 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3321 transitions. Word has length 79 [2022-11-03 04:07:20,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:20,647 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 3321 transitions. [2022-11-03 04:07:20,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:07:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3321 transitions. [2022-11-03 04:07:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 04:07:20,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:20,667 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:20,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:07:20,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1579671317, now seen corresponding path program 1 times [2022-11-03 04:07:20,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:20,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487640657] [2022-11-03 04:07:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:07:21,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:21,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487640657] [2022-11-03 04:07:21,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487640657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:21,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:21,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:07:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287542184] [2022-11-03 04:07:21,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:21,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:07:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:07:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:07:21,131 INFO L87 Difference]: Start difference. First operand 2277 states and 3321 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:07:25,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:28,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:30,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:33,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:35,015 INFO L93 Difference]: Finished difference Result 4916 states and 7147 transitions. [2022-11-03 04:07:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:35,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2022-11-03 04:07:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:35,045 INFO L225 Difference]: With dead ends: 4916 [2022-11-03 04:07:35,045 INFO L226 Difference]: Without dead ends: 3510 [2022-11-03 04:07:35,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:07:35,058 INFO L413 NwaCegarLoop]: 2045 mSDtfsCounter, 1783 mSDsluCounter, 6270 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 7739 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:35,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 7739 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 795 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2022-11-03 04:07:35,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2022-11-03 04:07:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 3491. [2022-11-03 04:07:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 2088 states have (on average 1.3103448275862069) internal successors, (2736), 2143 states have internal predecessors, (2736), 1179 states have call successors, (1179), 224 states have call predecessors, (1179), 223 states have return successors, (1180), 1162 states have call predecessors, (1180), 1178 states have call successors, (1180) [2022-11-03 04:07:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5095 transitions. [2022-11-03 04:07:35,424 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5095 transitions. Word has length 80 [2022-11-03 04:07:35,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:35,425 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5095 transitions. [2022-11-03 04:07:35,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:07:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5095 transitions. [2022-11-03 04:07:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 04:07:35,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:35,432 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-03 04:07:35,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:07:35,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2055254280, now seen corresponding path program 1 times [2022-11-03 04:07:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:35,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244003176] [2022-11-03 04:07:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:35,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:07:35,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:35,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244003176] [2022-11-03 04:07:35,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244003176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:35,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:35,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:07:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408182232] [2022-11-03 04:07:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:35,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:07:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:07:35,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:07:35,888 INFO L87 Difference]: Start difference. First operand 3491 states and 5095 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:07:38,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:40,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:42,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:44,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:48,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:48,464 INFO L93 Difference]: Finished difference Result 6135 states and 8923 transitions. [2022-11-03 04:07:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:48,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2022-11-03 04:07:48,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:48,492 INFO L225 Difference]: With dead ends: 6135 [2022-11-03 04:07:48,493 INFO L226 Difference]: Without dead ends: 3514 [2022-11-03 04:07:48,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:07:48,512 INFO L413 NwaCegarLoop]: 2045 mSDtfsCounter, 1781 mSDsluCounter, 6270 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 7739 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:48,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1785 Valid, 7739 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 795 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 04:07:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-11-03 04:07:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 3495. [2022-11-03 04:07:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 2092 states have (on average 1.3097514340344167) internal successors, (2740), 2146 states have internal predecessors, (2740), 1178 states have call successors, (1178), 225 states have call predecessors, (1178), 224 states have return successors, (1179), 1162 states have call predecessors, (1179), 1177 states have call successors, (1179) [2022-11-03 04:07:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5097 transitions. [2022-11-03 04:07:48,861 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5097 transitions. Word has length 81 [2022-11-03 04:07:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:48,862 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 5097 transitions. [2022-11-03 04:07:48,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:07:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5097 transitions. [2022-11-03 04:07:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 04:07:48,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:48,871 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-03 04:07:48,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:07:48,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:48,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash 872918968, now seen corresponding path program 1 times [2022-11-03 04:07:48,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:48,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605255478] [2022-11-03 04:07:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:07:49,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:49,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605255478] [2022-11-03 04:07:49,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605255478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:49,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:49,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:07:49,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993936766] [2022-11-03 04:07:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:07:49,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:49,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:07:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:07:49,337 INFO L87 Difference]: Start difference. First operand 3495 states and 5097 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:07:51,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:55,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:57,980 INFO L93 Difference]: Finished difference Result 7173 states and 10416 transitions. [2022-11-03 04:07:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:57,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2022-11-03 04:07:57,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:58,021 INFO L225 Difference]: With dead ends: 7173 [2022-11-03 04:07:58,021 INFO L226 Difference]: Without dead ends: 4547 [2022-11-03 04:07:58,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:07:58,041 INFO L413 NwaCegarLoop]: 2034 mSDtfsCounter, 1500 mSDsluCounter, 6265 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 7706 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:58,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 7706 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 823 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 04:07:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2022-11-03 04:07:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 4528. [2022-11-03 04:07:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4528 states, 2713 states have (on average 1.3085145595281975) internal successors, (3550), 2781 states have internal predecessors, (3550), 1518 states have call successors, (1518), 297 states have call predecessors, (1518), 296 states have return successors, (1518), 1499 states have call predecessors, (1518), 1517 states have call successors, (1518) [2022-11-03 04:07:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 6586 transitions. [2022-11-03 04:07:58,432 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 6586 transitions. Word has length 82 [2022-11-03 04:07:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:58,433 INFO L495 AbstractCegarLoop]: Abstraction has 4528 states and 6586 transitions. [2022-11-03 04:07:58,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 04:07:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 6586 transitions. [2022-11-03 04:07:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 04:07:58,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:58,461 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:58,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:07:58,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:58,462 INFO L85 PathProgramCache]: Analyzing trace with hash -976920912, now seen corresponding path program 1 times [2022-11-03 04:07:58,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:58,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240477133] [2022-11-03 04:07:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:58,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-03 04:07:58,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:58,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240477133] [2022-11-03 04:07:58,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240477133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:58,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:58,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:07:58,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459184034] [2022-11-03 04:07:58,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:58,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:07:58,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:58,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:07:58,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:58,698 INFO L87 Difference]: Start difference. First operand 4528 states and 6586 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:07:59,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:01,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:03,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:05,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:06,766 INFO L93 Difference]: Finished difference Result 10038 states and 14474 transitions. [2022-11-03 04:08:06,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:08:06,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-11-03 04:08:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:06,815 INFO L225 Difference]: With dead ends: 10038 [2022-11-03 04:08:06,816 INFO L226 Difference]: Without dead ends: 5524 [2022-11-03 04:08:06,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:08:06,845 INFO L413 NwaCegarLoop]: 1948 mSDtfsCounter, 1132 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:06,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 3466 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 04:08:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2022-11-03 04:08:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5517. [2022-11-03 04:08:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5517 states, 3286 states have (on average 1.2903225806451613) internal successors, (4240), 3370 states have internal predecessors, (4240), 1830 states have call successors, (1830), 403 states have call predecessors, (1830), 400 states have return successors, (1829), 1811 states have call predecessors, (1829), 1829 states have call successors, (1829) [2022-11-03 04:08:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 7899 transitions. [2022-11-03 04:08:07,358 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 7899 transitions. Word has length 90 [2022-11-03 04:08:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:07,360 INFO L495 AbstractCegarLoop]: Abstraction has 5517 states and 7899 transitions. [2022-11-03 04:08:07,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:08:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 7899 transitions. [2022-11-03 04:08:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 04:08:07,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:07,368 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:07,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:08:07,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:07,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:07,371 INFO L85 PathProgramCache]: Analyzing trace with hash -538064779, now seen corresponding path program 1 times [2022-11-03 04:08:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:07,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748977786] [2022-11-03 04:08:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:07,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-03 04:08:07,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748977786] [2022-11-03 04:08:07,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748977786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413786988] [2022-11-03 04:08:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:07,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:07,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:08:07,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:08:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:08,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:08:09,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:08:09,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:09,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413786988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:09,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:08:09,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-03 04:08:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782272165] [2022-11-03 04:08:09,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:08:09,218 INFO L87 Difference]: Start difference. First operand 5517 states and 7899 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:08:12,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:13,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:15,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:17,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:20,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:25,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:28,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:30,587 INFO L93 Difference]: Finished difference Result 14742 states and 21096 transitions. [2022-11-03 04:08:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:30,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-11-03 04:08:30,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:30,672 INFO L225 Difference]: With dead ends: 14742 [2022-11-03 04:08:30,672 INFO L226 Difference]: Without dead ends: 9921 [2022-11-03 04:08:30,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-03 04:08:30,704 INFO L413 NwaCegarLoop]: 2367 mSDtfsCounter, 1535 mSDsluCounter, 12267 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 13445 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:30,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 13445 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1507 Invalid, 3 Unknown, 0 Unchecked, 20.7s Time] [2022-11-03 04:08:30,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9921 states. [2022-11-03 04:08:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9921 to 9843. [2022-11-03 04:08:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9843 states, 5874 states have (on average 1.2919645897173988) internal successors, (7589), 6036 states have internal predecessors, (7589), 3241 states have call successors, (3241), 727 states have call predecessors, (3241), 727 states have return successors, (3253), 3198 states have call predecessors, (3253), 3240 states have call successors, (3253) [2022-11-03 04:08:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9843 states to 9843 states and 14083 transitions. [2022-11-03 04:08:31,467 INFO L78 Accepts]: Start accepts. Automaton has 9843 states and 14083 transitions. Word has length 92 [2022-11-03 04:08:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:31,468 INFO L495 AbstractCegarLoop]: Abstraction has 9843 states and 14083 transitions. [2022-11-03 04:08:31,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:08:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 9843 states and 14083 transitions. [2022-11-03 04:08:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 04:08:31,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:31,474 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:31,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:31,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:31,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash -263071190, now seen corresponding path program 1 times [2022-11-03 04:08:31,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:31,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323143056] [2022-11-03 04:08:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:08:32,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:32,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323143056] [2022-11-03 04:08:32,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323143056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:32,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952685717] [2022-11-03 04:08:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:32,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:32,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:32,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:08:32,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:08:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:33,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:08:33,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:08:33,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:33,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952685717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:33,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:08:33,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 04:08:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133930996] [2022-11-03 04:08:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:33,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:33,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:08:33,643 INFO L87 Difference]: Start difference. First operand 9843 states and 14083 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:08:39,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:44,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:46,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:48,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:50,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:52,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:55,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:57,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:01,498 INFO L93 Difference]: Finished difference Result 23789 states and 34049 transitions. [2022-11-03 04:09:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:09:01,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-11-03 04:09:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:01,600 INFO L225 Difference]: With dead ends: 23789 [2022-11-03 04:09:01,601 INFO L226 Difference]: Without dead ends: 14642 [2022-11-03 04:09:01,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 04:09:01,653 INFO L413 NwaCegarLoop]: 2260 mSDtfsCounter, 1814 mSDsluCounter, 11764 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 12898 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:01,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 12898 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1426 Invalid, 5 Unknown, 0 Unchecked, 27.1s Time] [2022-11-03 04:09:01,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14642 states. [2022-11-03 04:09:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14642 to 14542. [2022-11-03 04:09:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14542 states, 8683 states have (on average 1.2932166301969366) internal successors, (11229), 8938 states have internal predecessors, (11229), 4788 states have call successors, (4788), 1063 states have call predecessors, (4788), 1070 states have return successors, (4817), 4716 states have call predecessors, (4817), 4787 states have call successors, (4817) [2022-11-03 04:09:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14542 states to 14542 states and 20834 transitions. [2022-11-03 04:09:02,703 INFO L78 Accepts]: Start accepts. Automaton has 14542 states and 20834 transitions. Word has length 93 [2022-11-03 04:09:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:02,706 INFO L495 AbstractCegarLoop]: Abstraction has 14542 states and 20834 transitions. [2022-11-03 04:09:02,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:09:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 14542 states and 20834 transitions. [2022-11-03 04:09:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 04:09:02,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:02,714 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:02,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:02,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:02,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:02,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash -457317092, now seen corresponding path program 1 times [2022-11-03 04:09:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:02,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859867936] [2022-11-03 04:09:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:02,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:09:03,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:03,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859867936] [2022-11-03 04:09:03,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859867936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:03,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514415444] [2022-11-03 04:09:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:03,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:03,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:03,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:03,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:09:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:04,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:09:04,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:09:04,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:09:04,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514415444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:04,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:09:04,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 04:09:04,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643610464] [2022-11-03 04:09:04,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:04,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:09:04,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:04,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:09:04,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:09:04,640 INFO L87 Difference]: Start difference. First operand 14542 states and 20834 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:09:09,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:11,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:14,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:16,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:18,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:19,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:21,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:23,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:29,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:31,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:32,905 INFO L93 Difference]: Finished difference Result 35191 states and 50433 transitions. [2022-11-03 04:09:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:09:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2022-11-03 04:09:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:33,025 INFO L225 Difference]: With dead ends: 35191 [2022-11-03 04:09:33,025 INFO L226 Difference]: Without dead ends: 21345 [2022-11-03 04:09:33,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 04:09:33,089 INFO L413 NwaCegarLoop]: 2263 mSDtfsCounter, 1814 mSDsluCounter, 11776 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 12913 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:33,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 12913 Invalid, 1433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1428 Invalid, 3 Unknown, 0 Unchecked, 27.3s Time] [2022-11-03 04:09:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21345 states. [2022-11-03 04:09:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21345 to 14544. [2022-11-03 04:09:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14544 states, 8685 states have (on average 1.2931491076568797) internal successors, (11231), 8938 states have internal predecessors, (11231), 4788 states have call successors, (4788), 1063 states have call predecessors, (4788), 1070 states have return successors, (4817), 4718 states have call predecessors, (4817), 4787 states have call successors, (4817) [2022-11-03 04:09:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14544 states to 14544 states and 20836 transitions. [2022-11-03 04:09:34,187 INFO L78 Accepts]: Start accepts. Automaton has 14544 states and 20836 transitions. Word has length 94 [2022-11-03 04:09:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:34,188 INFO L495 AbstractCegarLoop]: Abstraction has 14544 states and 20836 transitions. [2022-11-03 04:09:34,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:09:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 14544 states and 20836 transitions. [2022-11-03 04:09:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 04:09:34,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:34,196 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:34,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 04:09:34,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 04:09:34,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1981881969, now seen corresponding path program 1 times [2022-11-03 04:09:34,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:34,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926032174] [2022-11-03 04:09:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:34,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:09:34,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:34,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926032174] [2022-11-03 04:09:34,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926032174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:34,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864495140] [2022-11-03 04:09:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:34,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:34,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:34,947 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:34,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:09:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:35,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:09:35,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-03 04:09:35,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:09:35,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864495140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:35,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:09:35,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 04:09:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288407876] [2022-11-03 04:09:35,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:35,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:09:35,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:09:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:09:35,997 INFO L87 Difference]: Start difference. First operand 14544 states and 20836 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:09:38,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:40,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:41,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:43,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:44,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:46,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:49,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:50,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:52,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:54,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:56,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:09:59,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:00,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:04,039 INFO L93 Difference]: Finished difference Result 35201 states and 50443 transitions. [2022-11-03 04:10:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:10:04,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2022-11-03 04:10:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:04,155 INFO L225 Difference]: With dead ends: 35201 [2022-11-03 04:10:04,155 INFO L226 Difference]: Without dead ends: 21353 [2022-11-03 04:10:04,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 04:10:04,222 INFO L413 NwaCegarLoop]: 2260 mSDtfsCounter, 1814 mSDsluCounter, 11764 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 12898 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:04,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 12898 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1425 Invalid, 5 Unknown, 0 Unchecked, 27.2s Time] [2022-11-03 04:10:04,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21353 states. [2022-11-03 04:10:05,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21353 to 14560. [2022-11-03 04:10:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14560 states, 8697 states have (on average 1.2927446245831895) internal successors, (11243), 8950 states have internal predecessors, (11243), 4788 states have call successors, (4788), 1063 states have call predecessors, (4788), 1074 states have return successors, (4821), 4722 states have call predecessors, (4821), 4787 states have call successors, (4821) [2022-11-03 04:10:05,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14560 states to 14560 states and 20852 transitions. [2022-11-03 04:10:05,237 INFO L78 Accepts]: Start accepts. Automaton has 14560 states and 20852 transitions. Word has length 95 [2022-11-03 04:10:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:05,238 INFO L495 AbstractCegarLoop]: Abstraction has 14560 states and 20852 transitions. [2022-11-03 04:10:05,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 04:10:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 14560 states and 20852 transitions. [2022-11-03 04:10:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 04:10:05,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:05,246 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:05,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 04:10:05,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2125929728, now seen corresponding path program 1 times [2022-11-03 04:10:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:05,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635691029] [2022-11-03 04:10:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:05,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 04:10:06,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:06,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635691029] [2022-11-03 04:10:06,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635691029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:06,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783792644] [2022-11-03 04:10:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:06,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:06,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:06,002 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:06,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 04:10:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:06,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:10:06,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-03 04:10:07,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 04:10:07,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783792644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:07,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [720136377] [2022-11-03 04:10:07,503 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-03 04:10:07,504 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:10:07,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:10:07,514 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:10:07,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:09,976 INFO L244 Elim1Store]: Index analysis took 230 ms [2022-11-03 04:10:13,346 INFO L356 Elim1Store]: treesize reduction 690, result has 47.4 percent of original size [2022-11-03 04:10:13,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 70 select indices, 70 select index equivalence classes, 2417 disjoint index pairs (out of 2415 index pairs), introduced 70 new quantified variables, introduced 69 case distinctions, treesize of input 357 treesize of output 842 [2022-11-03 04:10:14,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:14,937 INFO L244 Elim1Store]: Index analysis took 345 ms [2022-11-03 04:10:19,887 INFO L356 Elim1Store]: treesize reduction 1242, result has 33.4 percent of original size [2022-11-03 04:10:19,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 72 select indices, 72 select index equivalence classes, 2487 disjoint index pairs (out of 2556 index pairs), introduced 72 new quantified variables, introduced 138 case distinctions, treesize of input 367 treesize of output 853 [2022-11-03 04:10:28,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:28,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 71 select indices, 71 select index equivalence classes, 2486 disjoint index pairs (out of 2485 index pairs), introduced 71 new quantified variables, introduced 0 case distinctions, treesize of input 356 treesize of output 214 [2022-11-03 04:10:29,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 72 select indices, 72 select index equivalence classes, 2556 disjoint index pairs (out of 2556 index pairs), introduced 72 new quantified variables, introduced 0 case distinctions, treesize of input 361 treesize of output 217 [2022-11-03 04:10:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:29,936 INFO L244 Elim1Store]: Index analysis took 197 ms [2022-11-03 04:10:29,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 150 select indices, 150 select index equivalence classes, 1734 disjoint index pairs (out of 11175 index pairs), introduced 150 new quantified variables, introduced 0 case distinctions, treesize of input 1253 treesize of output 451 [2022-11-03 04:10:36,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:36,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 71 select indices, 71 select index equivalence classes, 2486 disjoint index pairs (out of 2485 index pairs), introduced 71 new quantified variables, introduced 0 case distinctions, treesize of input 356 treesize of output 214 [2022-11-03 04:10:36,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:36,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 72 select indices, 72 select index equivalence classes, 2556 disjoint index pairs (out of 2556 index pairs), introduced 72 new quantified variables, introduced 0 case distinctions, treesize of input 361 treesize of output 217 [2022-11-03 04:10:37,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:37,809 INFO L244 Elim1Store]: Index analysis took 174 ms [2022-11-03 04:10:37,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 150 select indices, 150 select index equivalence classes, 1734 disjoint index pairs (out of 11175 index pairs), introduced 150 new quantified variables, introduced 0 case distinctions, treesize of input 1253 treesize of output 451 [2022-11-03 04:11:26,330 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 2196 for LOIs [2022-11-03 04:11:49,647 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:12:45,391 WARN L234 SmtUtils]: Spent 55.00s on a formula simplification. DAG size of input: 2036 DAG size of output: 1896 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:27,551 WARN L234 SmtUtils]: Spent 25.07s on a formula simplification. DAG size of input: 1278 DAG size of output: 1275 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:53,512 WARN L234 SmtUtils]: Spent 25.34s on a formula simplification. DAG size of input: 1285 DAG size of output: 1282 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:19,999 WARN L234 SmtUtils]: Spent 25.79s on a formula simplification. DAG size of input: 1293 DAG size of output: 1288 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:46,711 WARN L234 SmtUtils]: Spent 26.00s on a formula simplification. DAG size of input: 1297 DAG size of output: 1292 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:14,182 WARN L234 SmtUtils]: Spent 26.70s on a formula simplification. DAG size of input: 1305 DAG size of output: 1298 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:42,412 WARN L234 SmtUtils]: Spent 27.37s on a formula simplification. DAG size of input: 1317 DAG size of output: 1310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:11,903 WARN L234 SmtUtils]: Spent 28.56s on a formula simplification. DAG size of input: 1328 DAG size of output: 1314 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:40,567 WARN L234 SmtUtils]: Spent 27.76s on a formula simplification. DAG size of input: 1332 DAG size of output: 1318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:10,277 WARN L234 SmtUtils]: Spent 28.69s on a formula simplification. DAG size of input: 1340 DAG size of output: 1323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:40,666 WARN L234 SmtUtils]: Spent 29.32s on a formula simplification. DAG size of input: 1344 DAG size of output: 1327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:10,349 WARN L234 SmtUtils]: Spent 28.60s on a formula simplification. DAG size of input: 1352 DAG size of output: 1332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:41,192 WARN L234 SmtUtils]: Spent 29.72s on a formula simplification. DAG size of input: 1372 DAG size of output: 1352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:41,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [720136377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:18:41,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:18:41,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [8, 10, 10] total 34 [2022-11-03 04:18:41,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551661298] [2022-11-03 04:18:41,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:18:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 04:18:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:18:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 04:18:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 04:18:41,202 INFO L87 Difference]: Start difference. First operand 14560 states and 20852 transitions. Second operand has 18 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 04:19:05,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:07,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:09,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:10,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:12,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:13,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:19,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:21,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:23,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:25,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:27,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:29,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:19:59,189 INFO L93 Difference]: Finished difference Result 29156 states and 41770 transitions. [2022-11-03 04:19:59,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 04:19:59,191 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 108 [2022-11-03 04:19:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:19:59,250 INFO L225 Difference]: With dead ends: 29156 [2022-11-03 04:19:59,250 INFO L226 Difference]: Without dead ends: 14610 [2022-11-03 04:19:59,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 291 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 411.7s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 04:19:59,310 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 28 mSDsluCounter, 10529 mSDsCounter, 0 mSdLazyCounter, 3505 mSolverCounterSat, 27 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 11386 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3505 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:19:59,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 11386 Invalid, 3539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 3505 Invalid, 7 Unknown, 0 Unchecked, 77.3s Time] [2022-11-03 04:19:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14610 states. [2022-11-03 04:20:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14610 to 14588. [2022-11-03 04:20:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14588 states, 8713 states have (on average 1.2923218179731435) internal successors, (11260), 8966 states have internal predecessors, (11260), 4798 states have call successors, (4798), 1064 states have call predecessors, (4798), 1076 states have return successors, (4841), 4733 states have call predecessors, (4841), 4797 states have call successors, (4841) [2022-11-03 04:20:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14588 states to 14588 states and 20899 transitions. [2022-11-03 04:20:00,314 INFO L78 Accepts]: Start accepts. Automaton has 14588 states and 20899 transitions. Word has length 108 [2022-11-03 04:20:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:00,314 INFO L495 AbstractCegarLoop]: Abstraction has 14588 states and 20899 transitions. [2022-11-03 04:20:00,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-03 04:20:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 14588 states and 20899 transitions. [2022-11-03 04:20:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:20:00,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:00,322 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:20:00,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:20:00,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:20:00,550 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:00,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:00,551 INFO L85 PathProgramCache]: Analyzing trace with hash 443412419, now seen corresponding path program 1 times [2022-11-03 04:20:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:20:00,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028998394] [2022-11-03 04:20:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:00,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:20:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-03 04:20:01,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:20:01,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028998394] [2022-11-03 04:20:01,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028998394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:20:01,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260692922] [2022-11-03 04:20:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:01,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:20:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:20:01,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:20:01,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0360233e-c99b-41fc-9f1e-d7ac03651852/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 04:20:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:02,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:20:02,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 04:20:02,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:20:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-03 04:20:02,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260692922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:20:02,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1957209023] [2022-11-03 04:20:02,536 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-03 04:20:02,537 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:20:02,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:20:02,538 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:20:02,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:20:05,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:05,306 INFO L244 Elim1Store]: Index analysis took 201 ms [2022-11-03 04:20:08,652 INFO L356 Elim1Store]: treesize reduction 690, result has 47.4 percent of original size [2022-11-03 04:20:08,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 70 select indices, 70 select index equivalence classes, 2417 disjoint index pairs (out of 2415 index pairs), introduced 70 new quantified variables, introduced 69 case distinctions, treesize of input 357 treesize of output 842 [2022-11-03 04:20:10,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:10,169 INFO L244 Elim1Store]: Index analysis took 338 ms [2022-11-03 04:20:15,369 WARN L234 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 764 DAG size of output: 417 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 04:20:15,380 INFO L356 Elim1Store]: treesize reduction 1242, result has 33.4 percent of original size [2022-11-03 04:20:15,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 72 select indices, 72 select index equivalence classes, 2487 disjoint index pairs (out of 2556 index pairs), introduced 72 new quantified variables, introduced 138 case distinctions, treesize of input 367 treesize of output 853 [2022-11-03 04:20:22,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:22,981 INFO L244 Elim1Store]: Index analysis took 170 ms [2022-11-03 04:20:22,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 150 select indices, 150 select index equivalence classes, 1734 disjoint index pairs (out of 11175 index pairs), introduced 150 new quantified variables, introduced 0 case distinctions, treesize of input 1253 treesize of output 451 [2022-11-03 04:20:23,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:20:23,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 72 select indices, 72 select index equivalence classes, 2556 disjoint index pairs (out of 2556 index pairs), introduced 72 new quantified variables, introduced 0 case distinctions, treesize of input 361 treesize of output 217