./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS --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 d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 --- 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-8393723 [2022-11-19 07:05:38,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:05:38,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:05:38,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:05:38,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:05:38,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:05:38,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:05:38,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:05:38,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:05:38,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:05:38,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:05:38,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:05:38,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:05:38,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:05:38,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:05:38,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:05:38,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:05:38,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:05:38,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:05:38,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:05:38,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:05:38,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:05:38,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:05:38,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:05:38,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:05:38,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:05:38,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:05:38,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:05:38,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:05:38,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:05:38,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:05:38,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:05:38,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:05:38,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:05:38,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:05:38,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:05:38,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:05:38,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:05:38,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:05:38,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:05:38,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:05:38,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:05:38,658 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:05:38,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:05:38,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:05:38,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:05:38,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:05:38,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:05:38,661 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:05:38,661 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:05:38,661 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:05:38,662 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:05:38,663 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:05:38,663 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:05:38,663 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:05:38,664 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:05:38,664 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:05:38,664 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:05:38,664 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:05:38,665 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:05:38,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:05:38,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:05:38,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:05:38,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:05:38,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:05:38,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:05:38,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:05:38,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:05:38,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:05:38,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:05:38,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:05:38,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:05:38,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:05:38,670 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:05:38,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:05:38,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:05:38,671 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:05:38,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:05:38,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:05:38,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:05:38,672 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 [2022-11-19 07:05:38,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:05:39,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:05:39,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:05:39,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:05:39,031 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:05:39,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-19 07:05:39,108 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data/9a2db2a69/ae6c67fc0dd74765859c3e1b5a43039e/FLAG937782a5b [2022-11-19 07:05:40,039 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:05:40,039 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-19 07:05:40,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data/9a2db2a69/ae6c67fc0dd74765859c3e1b5a43039e/FLAG937782a5b [2022-11-19 07:05:40,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data/9a2db2a69/ae6c67fc0dd74765859c3e1b5a43039e [2022-11-19 07:05:40,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:05:40,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:05:40,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:05:40,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:05:40,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:05:40,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:05:40" (1/1) ... [2022-11-19 07:05:40,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f00d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:40, skipping insertion in model container [2022-11-19 07:05:40,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:05:40" (1/1) ... [2022-11-19 07:05:40,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:05:40,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:05:43,523 WARN L234 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-19 07:05:43,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:05:43,814 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:05:44,405 WARN L234 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-19 07:05:44,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:05:44,587 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:05:44,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44 WrapperNode [2022-11-19 07:05:44,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:05:44,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:05:44,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:05:44,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:05:44,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:44,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:44,979 INFO L138 Inliner]: procedures = 480, calls = 4035, calls flagged for inlining = 166, calls inlined = 158, statements flattened = 7374 [2022-11-19 07:05:44,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:05:44,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:05:44,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:05:44,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:05:44,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:44,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:45,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:45,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:45,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:45,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:45,413 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:45,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:45,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:05:45,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:05:45,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:05:45,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:05:45,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (1/1) ... [2022-11-19 07:05:45,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:05:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:45,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:05:45,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:05:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-19 07:05:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-19 07:05:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2022-11-19 07:05:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2022-11-19 07:05:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2022-11-19 07:05:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2022-11-19 07:05:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:05:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:05:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:05:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:05:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2022-11-19 07:05:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2022-11-19 07:05:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2022-11-19 07:05:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2022-11-19 07:05:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-19 07:05:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-19 07:05:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2022-11-19 07:05:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2022-11-19 07:05:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2022-11-19 07:05:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2022-11-19 07:05:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2022-11-19 07:05:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2022-11-19 07:05:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2022-11-19 07:05:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2022-11-19 07:05:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2022-11-19 07:05:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2022-11-19 07:05:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2022-11-19 07:05:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2022-11-19 07:05:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-19 07:05:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-19 07:05:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2022-11-19 07:05:45,567 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2022-11-19 07:05:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 07:05:45,567 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 07:05:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 07:05:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 07:05:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-19 07:05:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-19 07:05:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2022-11-19 07:05:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2022-11-19 07:05:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:05:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2022-11-19 07:05:45,569 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2022-11-19 07:05:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2022-11-19 07:05:45,569 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2022-11-19 07:05:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:05:45,570 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:05:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2022-11-19 07:05:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2022-11-19 07:05:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2022-11-19 07:05:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2022-11-19 07:05:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:05:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:05:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2022-11-19 07:05:45,573 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2022-11-19 07:05:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-19 07:05:45,573 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-19 07:05:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2022-11-19 07:05:45,573 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2022-11-19 07:05:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb [2022-11-19 07:05:45,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb [2022-11-19 07:05:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:05:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2022-11-19 07:05:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2022-11-19 07:05:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:05:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:05:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2022-11-19 07:05:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2022-11-19 07:05:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-19 07:05:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-19 07:05:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-11-19 07:05:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-11-19 07:05:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2022-11-19 07:05:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2022-11-19 07:05:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2022-11-19 07:05:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2022-11-19 07:05:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2022-11-19 07:05:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2022-11-19 07:05:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2022-11-19 07:05:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2022-11-19 07:05:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 07:05:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 07:05:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2022-11-19 07:05:45,579 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2022-11-19 07:05:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:05:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:05:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2022-11-19 07:05:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2022-11-19 07:05:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:05:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2022-11-19 07:05:45,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2022-11-19 07:05:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-19 07:05:45,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-19 07:05:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:05:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:05:45,583 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2022-11-19 07:05:45,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2022-11-19 07:05:45,583 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2022-11-19 07:05:45,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2022-11-19 07:05:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2022-11-19 07:05:45,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2022-11-19 07:05:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 07:05:45,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 07:05:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:05:45,585 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:05:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 07:05:45,585 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 07:05:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb [2022-11-19 07:05:45,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb [2022-11-19 07:05:45,586 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2022-11-19 07:05:45,587 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2022-11-19 07:05:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:05:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:05:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 07:05:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 07:05:45,591 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2022-11-19 07:05:45,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2022-11-19 07:05:45,594 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2022-11-19 07:05:45,594 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2022-11-19 07:05:45,594 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:05:45,599 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:05:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2022-11-19 07:05:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2022-11-19 07:05:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2022-11-19 07:05:45,600 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2022-11-19 07:05:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:05:45,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:05:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:05:45,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:05:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2022-11-19 07:05:45,601 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2022-11-19 07:05:45,601 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2022-11-19 07:05:45,601 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2022-11-19 07:05:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2022-11-19 07:05:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2022-11-19 07:05:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2022-11-19 07:05:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2022-11-19 07:05:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2022-11-19 07:05:45,602 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2022-11-19 07:05:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2022-11-19 07:05:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2022-11-19 07:05:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2022-11-19 07:05:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2022-11-19 07:05:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-19 07:05:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-19 07:05:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2022-11-19 07:05:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2022-11-19 07:05:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:05:45,604 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:05:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:05:45,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:05:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2022-11-19 07:05:45,604 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2022-11-19 07:05:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2022-11-19 07:05:45,604 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2022-11-19 07:05:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-19 07:05:45,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-19 07:05:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:05:45,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:05:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2022-11-19 07:05:45,605 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2022-11-19 07:05:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2022-11-19 07:05:45,606 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2022-11-19 07:05:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2022-11-19 07:05:45,606 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2022-11-19 07:05:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:05:45,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:05:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2022-11-19 07:05:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2022-11-19 07:05:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2022-11-19 07:05:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2022-11-19 07:05:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2022-11-19 07:05:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2022-11-19 07:05:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 07:05:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 07:05:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2022-11-19 07:05:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2022-11-19 07:05:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:05:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:05:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:05:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2022-11-19 07:05:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2022-11-19 07:05:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2022-11-19 07:05:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2022-11-19 07:05:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2022-11-19 07:05:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2022-11-19 07:05:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:05:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-19 07:05:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-19 07:05:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-19 07:05:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-19 07:05:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:05:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2022-11-19 07:05:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2022-11-19 07:05:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2022-11-19 07:05:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2022-11-19 07:05:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2022-11-19 07:05:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2022-11-19 07:05:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 07:05:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 07:05:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:05:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:05:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-19 07:05:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-19 07:05:45,612 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2022-11-19 07:05:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2022-11-19 07:05:45,612 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 07:05:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 07:05:45,612 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2022-11-19 07:05:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2022-11-19 07:05:45,612 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 07:05:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 07:05:45,613 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2022-11-19 07:05:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2022-11-19 07:05:45,613 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2022-11-19 07:05:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2022-11-19 07:05:45,613 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2022-11-19 07:05:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2022-11-19 07:05:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2022-11-19 07:05:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2022-11-19 07:05:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 07:05:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 07:05:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2022-11-19 07:05:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2022-11-19 07:05:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2022-11-19 07:05:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2022-11-19 07:05:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2022-11-19 07:05:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2022-11-19 07:05:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2022-11-19 07:05:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2022-11-19 07:05:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:05:45,616 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:05:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2022-11-19 07:05:45,616 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2022-11-19 07:05:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:05:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:05:45,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:05:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2022-11-19 07:05:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2022-11-19 07:05:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2022-11-19 07:05:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2022-11-19 07:05:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2022-11-19 07:05:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2022-11-19 07:05:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2022-11-19 07:05:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2022-11-19 07:05:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2022-11-19 07:05:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2022-11-19 07:05:45,623 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2022-11-19 07:05:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2022-11-19 07:05:45,624 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2022-11-19 07:05:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2022-11-19 07:05:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2022-11-19 07:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2022-11-19 07:05:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2022-11-19 07:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2022-11-19 07:05:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2022-11-19 07:05:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2022-11-19 07:05:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2022-11-19 07:05:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2022-11-19 07:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2022-11-19 07:05:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2022-11-19 07:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 07:05:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 07:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2022-11-19 07:05:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2022-11-19 07:05:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-19 07:05:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-19 07:05:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2022-11-19 07:05:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2022-11-19 07:05:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2022-11-19 07:05:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2022-11-19 07:05:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2022-11-19 07:05:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2022-11-19 07:05:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2022-11-19 07:05:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2022-11-19 07:05:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-19 07:05:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-19 07:05:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:05:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2022-11-19 07:05:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2022-11-19 07:05:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-19 07:05:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-19 07:05:46,992 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:05:46,996 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:05:47,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:06:10,203 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:06:11,622 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:06:11,622 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:06:11,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:11 BoogieIcfgContainer [2022-11-19 07:06:11,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:06:11,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:06:11,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:06:11,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:06:11,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:05:40" (1/3) ... [2022-11-19 07:06:11,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d8d30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:11, skipping insertion in model container [2022-11-19 07:06:11,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:44" (2/3) ... [2022-11-19 07:06:11,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d8d30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:11, skipping insertion in model container [2022-11-19 07:06:11,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:11" (3/3) ... [2022-11-19 07:06:11,642 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-19 07:06:11,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:06:11,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:06:11,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:06:11,820 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;@22c36f5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:06:11,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:06:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 2147 states, 1312 states have (on average 1.3201219512195121) internal successors, (1732), 1359 states have internal predecessors, (1732), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) [2022-11-19 07:06:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:06:11,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:11,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:11,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:11,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash 922005229, now seen corresponding path program 1 times [2022-11-19 07:06:11,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:11,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834578446] [2022-11-19 07:06:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:11,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:12,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:12,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834578446] [2022-11-19 07:06:12,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834578446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:12,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:12,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:12,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438162275] [2022-11-19 07:06:12,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:12,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:12,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:12,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:12,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:12,707 INFO L87 Difference]: Start difference. First operand has 2147 states, 1312 states have (on average 1.3201219512195121) internal successors, (1732), 1359 states have internal predecessors, (1732), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:06:17,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:19,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:19,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:19,557 INFO L93 Difference]: Finished difference Result 6413 states and 9715 transitions. [2022-11-19 07:06:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:19,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-19 07:06:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:19,618 INFO L225 Difference]: With dead ends: 6413 [2022-11-19 07:06:19,618 INFO L226 Difference]: Without dead ends: 4253 [2022-11-19 07:06:19,646 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 [2022-11-19 07:06:19,650 INFO L413 NwaCegarLoop]: 3561 mSDtfsCounter, 3081 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 6428 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:19,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3081 Valid, 6428 Invalid, 486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-19 07:06:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2022-11-19 07:06:20,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4245. [2022-11-19 07:06:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4245 states, 2606 states have (on average 1.312739831158864) internal successors, (3421), 2674 states have internal predecessors, (3421), 1376 states have call successors, (1376), 263 states have call predecessors, (1376), 262 states have return successors, (1365), 1357 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-11-19 07:06:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4245 states to 4245 states and 6162 transitions. [2022-11-19 07:06:20,225 INFO L78 Accepts]: Start accepts. Automaton has 4245 states and 6162 transitions. Word has length 24 [2022-11-19 07:06:20,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:20,228 INFO L495 AbstractCegarLoop]: Abstraction has 4245 states and 6162 transitions. [2022-11-19 07:06:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:06:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4245 states and 6162 transitions. [2022-11-19 07:06:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:06:20,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:20,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:20,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:06:20,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2021401478, now seen corresponding path program 1 times [2022-11-19 07:06:20,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:20,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869911294] [2022-11-19 07:06:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:20,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:20,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869911294] [2022-11-19 07:06:20,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869911294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:20,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:20,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:20,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378781058] [2022-11-19 07:06:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:20,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:20,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:20,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:20,716 INFO L87 Difference]: Start difference. First operand 4245 states and 6162 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:24,744 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 [] [2022-11-19 07:06:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:25,960 INFO L93 Difference]: Finished difference Result 6874 states and 10100 transitions. [2022-11-19 07:06:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:25,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-11-19 07:06:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:26,022 INFO L225 Difference]: With dead ends: 6874 [2022-11-19 07:06:26,023 INFO L226 Difference]: Without dead ends: 6870 [2022-11-19 07:06:26,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:26,031 INFO L413 NwaCegarLoop]: 3364 mSDtfsCounter, 2923 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2923 SdHoareTripleChecker+Valid, 5329 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:26,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2923 Valid, 5329 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 423 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-19 07:06:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6870 states. [2022-11-19 07:06:26,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6870 to 6861. [2022-11-19 07:06:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6861 states, 4204 states have (on average 1.3132730732635585) internal successors, (5521), 4334 states have internal predecessors, (5521), 2212 states have call successors, (2212), 461 states have call predecessors, (2212), 444 states have return successors, (2353), 2147 states have call predecessors, (2353), 2201 states have call successors, (2353) [2022-11-19 07:06:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 10086 transitions. [2022-11-19 07:06:26,621 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 10086 transitions. Word has length 26 [2022-11-19 07:06:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:26,622 INFO L495 AbstractCegarLoop]: Abstraction has 6861 states and 10086 transitions. [2022-11-19 07:06:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 10086 transitions. [2022-11-19 07:06:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:06:26,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:26,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:26,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:06:26,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:26,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:26,639 INFO L85 PathProgramCache]: Analyzing trace with hash 934457852, now seen corresponding path program 1 times [2022-11-19 07:06:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:26,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571957049] [2022-11-19 07:06:26,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:26,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:26,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:26,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571957049] [2022-11-19 07:06:26,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571957049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:26,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:26,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:26,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754978058] [2022-11-19 07:06:26,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:26,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:26,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:26,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:26,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:26,960 INFO L87 Difference]: Start difference. First operand 6861 states and 10086 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:06:32,473 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 [] [2022-11-19 07:06:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:33,173 INFO L93 Difference]: Finished difference Result 18267 states and 26714 transitions. [2022-11-19 07:06:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:33,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-11-19 07:06:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:33,250 INFO L225 Difference]: With dead ends: 18267 [2022-11-19 07:06:33,250 INFO L226 Difference]: Without dead ends: 11409 [2022-11-19 07:06:33,289 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 [2022-11-19 07:06:33,292 INFO L413 NwaCegarLoop]: 3767 mSDtfsCounter, 2129 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 6623 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:33,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 6623 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 517 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-19 07:06:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11409 states. [2022-11-19 07:06:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11409 to 11385. [2022-11-19 07:06:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11385 states, 6988 states have (on average 1.309244419004007) internal successors, (9149), 7184 states have internal predecessors, (9149), 3604 states have call successors, (3604), 827 states have call predecessors, (3604), 792 states have return successors, (3845), 3501 states have call predecessors, (3845), 3593 states have call successors, (3845) [2022-11-19 07:06:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11385 states to 11385 states and 16598 transitions. [2022-11-19 07:06:34,129 INFO L78 Accepts]: Start accepts. Automaton has 11385 states and 16598 transitions. Word has length 30 [2022-11-19 07:06:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:34,130 INFO L495 AbstractCegarLoop]: Abstraction has 11385 states and 16598 transitions. [2022-11-19 07:06:34,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:06:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 11385 states and 16598 transitions. [2022-11-19 07:06:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:06:34,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:34,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:34,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:06:34,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1256554910, now seen corresponding path program 1 times [2022-11-19 07:06:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:34,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176970940] [2022-11-19 07:06:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:34,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:34,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176970940] [2022-11-19 07:06:34,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176970940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:34,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:34,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699638656] [2022-11-19 07:06:34,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:34,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:34,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:34,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:34,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:34,605 INFO L87 Difference]: Start difference. First operand 11385 states and 16598 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:38,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:38,618 INFO L93 Difference]: Finished difference Result 11723 states and 16872 transitions. [2022-11-19 07:06:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:38,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-11-19 07:06:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:38,698 INFO L225 Difference]: With dead ends: 11723 [2022-11-19 07:06:38,698 INFO L226 Difference]: Without dead ends: 11719 [2022-11-19 07:06:38,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:38,709 INFO L413 NwaCegarLoop]: 2870 mSDtfsCounter, 2791 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2791 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:38,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2791 Valid, 3180 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 07:06:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11719 states. [2022-11-19 07:06:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11719 to 11715. [2022-11-19 07:06:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11715 states, 7172 states have (on average 1.3018683770217512) internal successors, (9337), 7362 states have internal predecessors, (9337), 3638 states have call successors, (3638), 943 states have call predecessors, (3638), 904 states have return successors, (3881), 3537 states have call predecessors, (3881), 3629 states have call successors, (3881) [2022-11-19 07:06:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11715 states to 11715 states and 16856 transitions. [2022-11-19 07:06:39,539 INFO L78 Accepts]: Start accepts. Automaton has 11715 states and 16856 transitions. Word has length 29 [2022-11-19 07:06:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:39,540 INFO L495 AbstractCegarLoop]: Abstraction has 11715 states and 16856 transitions. [2022-11-19 07:06:39,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 11715 states and 16856 transitions. [2022-11-19 07:06:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:06:39,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:39,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:39,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:06:39,543 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1597156555, now seen corresponding path program 1 times [2022-11-19 07:06:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991188200] [2022-11-19 07:06:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:39,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:39,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991188200] [2022-11-19 07:06:39,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991188200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:39,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:39,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:39,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519495638] [2022-11-19 07:06:39,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:39,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:39,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:39,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:39,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:39,810 INFO L87 Difference]: Start difference. First operand 11715 states and 16856 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:42,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:42,669 INFO L93 Difference]: Finished difference Result 11717 states and 16857 transitions. [2022-11-19 07:06:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:42,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-11-19 07:06:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:42,736 INFO L225 Difference]: With dead ends: 11717 [2022-11-19 07:06:42,737 INFO L226 Difference]: Without dead ends: 11714 [2022-11-19 07:06:42,746 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 [2022-11-19 07:06:42,746 INFO L413 NwaCegarLoop]: 2857 mSDtfsCounter, 3079 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3079 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:42,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3079 Valid, 2857 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:06:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11714 states. [2022-11-19 07:06:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11714 to 11714. [2022-11-19 07:06:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11714 states, 7172 states have (on average 1.3015895147796988) internal successors, (9335), 7361 states have internal predecessors, (9335), 3637 states have call successors, (3637), 943 states have call predecessors, (3637), 904 states have return successors, (3881), 3537 states have call predecessors, (3881), 3629 states have call successors, (3881) [2022-11-19 07:06:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11714 states to 11714 states and 16853 transitions. [2022-11-19 07:06:43,555 INFO L78 Accepts]: Start accepts. Automaton has 11714 states and 16853 transitions. Word has length 29 [2022-11-19 07:06:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:43,555 INFO L495 AbstractCegarLoop]: Abstraction has 11714 states and 16853 transitions. [2022-11-19 07:06:43,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 11714 states and 16853 transitions. [2022-11-19 07:06:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:06:43,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:43,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:43,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:06:43,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:43,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:43,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2028940010, now seen corresponding path program 1 times [2022-11-19 07:06:43,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:43,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515745438] [2022-11-19 07:06:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:43,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:43,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:43,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515745438] [2022-11-19 07:06:43,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515745438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:43,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:43,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:43,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629345322] [2022-11-19 07:06:43,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:43,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:43,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:43,824 INFO L87 Difference]: Start difference. First operand 11714 states and 16853 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:49,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:49,526 INFO L93 Difference]: Finished difference Result 13285 states and 18796 transitions. [2022-11-19 07:06:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:49,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-19 07:06:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:49,601 INFO L225 Difference]: With dead ends: 13285 [2022-11-19 07:06:49,602 INFO L226 Difference]: Without dead ends: 13281 [2022-11-19 07:06:49,611 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 [2022-11-19 07:06:49,612 INFO L413 NwaCegarLoop]: 3041 mSDtfsCounter, 897 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 5501 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:49,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 5501 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-19 07:06:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2022-11-19 07:06:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 13276. [2022-11-19 07:06:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13276 states, 8072 states have (on average 1.2912537165510407) internal successors, (10423), 8295 states have internal predecessors, (10423), 4055 states have call successors, (4055), 1193 states have call predecessors, (4055), 1148 states have return successors, (4301), 3947 states have call predecessors, (4301), 4049 states have call successors, (4301) [2022-11-19 07:06:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13276 states to 13276 states and 18779 transitions. [2022-11-19 07:06:50,535 INFO L78 Accepts]: Start accepts. Automaton has 13276 states and 18779 transitions. Word has length 30 [2022-11-19 07:06:50,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:50,536 INFO L495 AbstractCegarLoop]: Abstraction has 13276 states and 18779 transitions. [2022-11-19 07:06:50,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 13276 states and 18779 transitions. [2022-11-19 07:06:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:06:50,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:50,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:50,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:06:50,539 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:50,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2045516177, now seen corresponding path program 1 times [2022-11-19 07:06:50,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:50,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795459410] [2022-11-19 07:06:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:50,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:50,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795459410] [2022-11-19 07:06:50,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795459410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:50,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:50,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:50,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019821174] [2022-11-19 07:06:50,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:50,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:50,808 INFO L87 Difference]: Start difference. First operand 13276 states and 18779 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:54,100 INFO L93 Difference]: Finished difference Result 13278 states and 18780 transitions. [2022-11-19 07:06:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:06:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-19 07:06:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:54,170 INFO L225 Difference]: With dead ends: 13278 [2022-11-19 07:06:54,170 INFO L226 Difference]: Without dead ends: 13269 [2022-11-19 07:06:54,260 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 [2022-11-19 07:06:54,260 INFO L413 NwaCegarLoop]: 2852 mSDtfsCounter, 3069 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3069 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:54,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3069 Valid, 2852 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:06:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13269 states. [2022-11-19 07:06:55,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13269 to 13269. [2022-11-19 07:06:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13269 states, 8066 states have (on average 1.2906025291346392) internal successors, (10410), 8288 states have internal predecessors, (10410), 4054 states have call successors, (4054), 1193 states have call predecessors, (4054), 1148 states have return successors, (4301), 3947 states have call predecessors, (4301), 4049 states have call successors, (4301) [2022-11-19 07:06:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13269 states to 13269 states and 18765 transitions. [2022-11-19 07:06:55,237 INFO L78 Accepts]: Start accepts. Automaton has 13269 states and 18765 transitions. Word has length 33 [2022-11-19 07:06:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:55,238 INFO L495 AbstractCegarLoop]: Abstraction has 13269 states and 18765 transitions. [2022-11-19 07:06:55,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:06:55,238 INFO L276 IsEmpty]: Start isEmpty. Operand 13269 states and 18765 transitions. [2022-11-19 07:06:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 07:06:55,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:55,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:55,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:06:55,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:55,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:55,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1195812597, now seen corresponding path program 1 times [2022-11-19 07:06:55,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:55,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909876808] [2022-11-19 07:06:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:55,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:55,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909876808] [2022-11-19 07:06:55,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909876808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:55,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:55,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:06:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227674280] [2022-11-19 07:06:55,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:06:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:06:55,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:06:55,637 INFO L87 Difference]: Start difference. First operand 13269 states and 18765 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:06:59,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:00,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:01,195 INFO L93 Difference]: Finished difference Result 13275 states and 18769 transitions. [2022-11-19 07:07:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:01,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2022-11-19 07:07:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:01,252 INFO L225 Difference]: With dead ends: 13275 [2022-11-19 07:07:01,252 INFO L226 Difference]: Without dead ends: 13272 [2022-11-19 07:07:01,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:01,259 INFO L413 NwaCegarLoop]: 2881 mSDtfsCounter, 340 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:01,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 5455 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-19 07:07:01,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13272 states. [2022-11-19 07:07:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13272 to 13268. [2022-11-19 07:07:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13268 states, 8066 states have (on average 1.288866848499876) internal successors, (10396), 8287 states have internal predecessors, (10396), 4053 states have call successors, (4053), 1193 states have call predecessors, (4053), 1148 states have return successors, (4301), 3947 states have call predecessors, (4301), 4049 states have call successors, (4301) [2022-11-19 07:07:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13268 states to 13268 states and 18750 transitions. [2022-11-19 07:07:02,091 INFO L78 Accepts]: Start accepts. Automaton has 13268 states and 18750 transitions. Word has length 43 [2022-11-19 07:07:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:02,092 INFO L495 AbstractCegarLoop]: Abstraction has 13268 states and 18750 transitions. [2022-11-19 07:07:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:07:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 13268 states and 18750 transitions. [2022-11-19 07:07:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 07:07:02,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:02,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:02,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:07:02,094 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:02,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1653657810, now seen corresponding path program 1 times [2022-11-19 07:07:02,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:02,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416092503] [2022-11-19 07:07:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:02,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:02,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416092503] [2022-11-19 07:07:02,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416092503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:02,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:02,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:02,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954810120] [2022-11-19 07:07:02,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:02,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:02,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:02,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:02,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:02,387 INFO L87 Difference]: Start difference. First operand 13268 states and 18750 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:07:06,814 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 [] [2022-11-19 07:07:08,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:08,355 INFO L93 Difference]: Finished difference Result 13448 states and 18888 transitions. [2022-11-19 07:07:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:08,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-11-19 07:07:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:08,435 INFO L225 Difference]: With dead ends: 13448 [2022-11-19 07:07:08,436 INFO L226 Difference]: Without dead ends: 13445 [2022-11-19 07:07:08,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:08,445 INFO L413 NwaCegarLoop]: 2853 mSDtfsCounter, 253 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:08,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 5468 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 07:07:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13445 states. [2022-11-19 07:07:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13445 to 13445. [2022-11-19 07:07:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13445 states, 8163 states have (on average 1.2849442606884725) internal successors, (10489), 8383 states have internal predecessors, (10489), 4068 states have call successors, (4068), 1258 states have call predecessors, (4068), 1213 states have return successors, (4317), 3963 states have call predecessors, (4317), 4065 states have call successors, (4317) [2022-11-19 07:07:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13445 states to 13445 states and 18874 transitions. [2022-11-19 07:07:09,496 INFO L78 Accepts]: Start accepts. Automaton has 13445 states and 18874 transitions. Word has length 46 [2022-11-19 07:07:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:09,497 INFO L495 AbstractCegarLoop]: Abstraction has 13445 states and 18874 transitions. [2022-11-19 07:07:09,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:07:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 13445 states and 18874 transitions. [2022-11-19 07:07:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:07:09,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:09,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:09,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:07:09,505 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:09,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash 145251466, now seen corresponding path program 1 times [2022-11-19 07:07:09,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:09,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750214761] [2022-11-19 07:07:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:07:09,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:09,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750214761] [2022-11-19 07:07:09,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750214761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:09,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:09,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046649195] [2022-11-19 07:07:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:09,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:09,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:09,781 INFO L87 Difference]: Start difference. First operand 13445 states and 18874 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:07:14,927 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 [] [2022-11-19 07:07:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:15,635 INFO L93 Difference]: Finished difference Result 23719 states and 33241 transitions. [2022-11-19 07:07:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-19 07:07:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:15,685 INFO L225 Difference]: With dead ends: 23719 [2022-11-19 07:07:15,685 INFO L226 Difference]: Without dead ends: 10275 [2022-11-19 07:07:15,750 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 [2022-11-19 07:07:15,751 INFO L413 NwaCegarLoop]: 2847 mSDtfsCounter, 8 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5689 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:15,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5689 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 476 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-19 07:07:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10275 states. [2022-11-19 07:07:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10275 to 10262. [2022-11-19 07:07:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10262 states, 6211 states have (on average 1.2790210916116567) internal successors, (7944), 6376 states have internal predecessors, (7944), 3112 states have call successors, (3112), 974 states have call predecessors, (3112), 938 states have return successors, (3293), 3033 states have call predecessors, (3293), 3109 states have call successors, (3293) [2022-11-19 07:07:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10262 states to 10262 states and 14349 transitions. [2022-11-19 07:07:16,416 INFO L78 Accepts]: Start accepts. Automaton has 10262 states and 14349 transitions. Word has length 68 [2022-11-19 07:07:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:16,416 INFO L495 AbstractCegarLoop]: Abstraction has 10262 states and 14349 transitions. [2022-11-19 07:07:16,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:07:16,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10262 states and 14349 transitions. [2022-11-19 07:07:16,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 07:07:16,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:16,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:07:16,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:07:16,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:16,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1175384878, now seen corresponding path program 1 times [2022-11-19 07:07:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:16,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449879782] [2022-11-19 07:07:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 07:07:16,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:16,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449879782] [2022-11-19 07:07:16,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449879782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:16,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:16,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:16,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390512817] [2022-11-19 07:07:16,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:16,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:16,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:16,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:16,682 INFO L87 Difference]: Start difference. First operand 10262 states and 14349 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:07:23,064 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 [] [2022-11-19 07:07:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:24,337 INFO L93 Difference]: Finished difference Result 20162 states and 28209 transitions. [2022-11-19 07:07:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:24,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2022-11-19 07:07:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:24,400 INFO L225 Difference]: With dead ends: 20162 [2022-11-19 07:07:24,401 INFO L226 Difference]: Without dead ends: 13394 [2022-11-19 07:07:24,431 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 [2022-11-19 07:07:24,432 INFO L413 NwaCegarLoop]: 4906 mSDtfsCounter, 3053 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3053 SdHoareTripleChecker+Valid, 7077 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:24,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3053 Valid, 7077 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 613 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-19 07:07:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13394 states. [2022-11-19 07:07:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13394 to 13383. [2022-11-19 07:07:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13383 states, 8099 states have (on average 1.278923323867144) internal successors, (10358), 8321 states have internal predecessors, (10358), 4052 states have call successors, (4052), 1278 states have call predecessors, (4052), 1231 states have return successors, (4294), 3946 states have call predecessors, (4294), 4049 states have call successors, (4294) [2022-11-19 07:07:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 18704 transitions. [2022-11-19 07:07:25,403 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 18704 transitions. Word has length 80 [2022-11-19 07:07:25,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:25,404 INFO L495 AbstractCegarLoop]: Abstraction has 13383 states and 18704 transitions. [2022-11-19 07:07:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:07:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 18704 transitions. [2022-11-19 07:07:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:07:25,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:25,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:07:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:07:25,423 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1241096274, now seen corresponding path program 1 times [2022-11-19 07:07:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762682875] [2022-11-19 07:07:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:25,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-19 07:07:25,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:25,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762682875] [2022-11-19 07:07:25,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762682875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:25,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:25,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595898549] [2022-11-19 07:07:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:25,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:25,776 INFO L87 Difference]: Start difference. First operand 13383 states and 18704 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:07:30,558 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 [] [2022-11-19 07:07:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:30,916 INFO L93 Difference]: Finished difference Result 13388 states and 18707 transitions. [2022-11-19 07:07:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:30,917 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), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-19 07:07:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:30,985 INFO L225 Difference]: With dead ends: 13388 [2022-11-19 07:07:30,985 INFO L226 Difference]: Without dead ends: 13385 [2022-11-19 07:07:30,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:30,998 INFO L413 NwaCegarLoop]: 3153 mSDtfsCounter, 2624 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2624 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:30,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2624 Valid, 3936 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-19 07:07:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13385 states. [2022-11-19 07:07:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13385 to 13382. [2022-11-19 07:07:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13382 states, 8099 states have (on average 1.277935547598469) internal successors, (10350), 8320 states have internal predecessors, (10350), 4051 states have call successors, (4051), 1278 states have call predecessors, (4051), 1231 states have return successors, (4294), 3946 states have call predecessors, (4294), 4049 states have call successors, (4294) [2022-11-19 07:07:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13382 states to 13382 states and 18695 transitions. [2022-11-19 07:07:32,084 INFO L78 Accepts]: Start accepts. Automaton has 13382 states and 18695 transitions. Word has length 87 [2022-11-19 07:07:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:32,085 INFO L495 AbstractCegarLoop]: Abstraction has 13382 states and 18695 transitions. [2022-11-19 07:07:32,085 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), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:07:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 13382 states and 18695 transitions. [2022-11-19 07:07:32,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-19 07:07:32,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:32,146 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:32,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:07:32,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:32,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:32,147 INFO L85 PathProgramCache]: Analyzing trace with hash 794512897, now seen corresponding path program 1 times [2022-11-19 07:07:32,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:32,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789240282] [2022-11-19 07:07:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:32,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-11-19 07:07:32,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:32,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789240282] [2022-11-19 07:07:32,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789240282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:32,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:32,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081197551] [2022-11-19 07:07:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:32,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:32,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:32,897 INFO L87 Difference]: Start difference. First operand 13382 states and 18695 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:07:37,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:39,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:40,375 INFO L93 Difference]: Finished difference Result 30389 states and 42280 transitions. [2022-11-19 07:07:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:40,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 366 [2022-11-19 07:07:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:40,445 INFO L225 Difference]: With dead ends: 30389 [2022-11-19 07:07:40,445 INFO L226 Difference]: Without dead ends: 17010 [2022-11-19 07:07:40,496 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 [2022-11-19 07:07:40,497 INFO L413 NwaCegarLoop]: 4305 mSDtfsCounter, 2728 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2728 SdHoareTripleChecker+Valid, 7137 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:40,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2728 Valid, 7137 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 566 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-19 07:07:40,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17010 states. [2022-11-19 07:07:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17010 to 16958. [2022-11-19 07:07:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16958 states, 10266 states have (on average 1.2766413403467758) internal successors, (13106), 10555 states have internal predecessors, (13106), 5064 states have call successors, (5064), 1681 states have call predecessors, (5064), 1627 states have return successors, (5352), 4935 states have call predecessors, (5352), 5062 states have call successors, (5352) [2022-11-19 07:07:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16958 states to 16958 states and 23522 transitions. [2022-11-19 07:07:41,591 INFO L78 Accepts]: Start accepts. Automaton has 16958 states and 23522 transitions. Word has length 366 [2022-11-19 07:07:41,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:41,592 INFO L495 AbstractCegarLoop]: Abstraction has 16958 states and 23522 transitions. [2022-11-19 07:07:41,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:07:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 16958 states and 23522 transitions. [2022-11-19 07:07:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-11-19 07:07:41,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:41,667 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:41,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:07:41,667 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1673096071, now seen corresponding path program 1 times [2022-11-19 07:07:41,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:41,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706355196] [2022-11-19 07:07:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-11-19 07:07:42,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:42,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706355196] [2022-11-19 07:07:42,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706355196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:42,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:42,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:07:42,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538477403] [2022-11-19 07:07:42,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:42,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:07:42,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:07:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:07:42,616 INFO L87 Difference]: Start difference. First operand 16958 states and 23522 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 07:07:48,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:50,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:51,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:52,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:52,810 INFO L93 Difference]: Finished difference Result 33429 states and 46420 transitions. [2022-11-19 07:07:52,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:07:52,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 389 [2022-11-19 07:07:52,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:52,895 INFO L225 Difference]: With dead ends: 33429 [2022-11-19 07:07:52,895 INFO L226 Difference]: Without dead ends: 16919 [2022-11-19 07:07:52,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:52,946 INFO L413 NwaCegarLoop]: 2849 mSDtfsCounter, 16 mSDsluCounter, 5685 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8534 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:52,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8534 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-19 07:07:52,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16919 states. [2022-11-19 07:07:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16919 to 16902. [2022-11-19 07:07:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16902 states, 10231 states have (on average 1.2767080441794545) internal successors, (13062), 10520 states have internal predecessors, (13062), 5052 states have call successors, (5052), 1672 states have call predecessors, (5052), 1618 states have return successors, (5340), 4923 states have call predecessors, (5340), 5050 states have call successors, (5340) [2022-11-19 07:07:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16902 states to 16902 states and 23454 transitions. [2022-11-19 07:07:54,386 INFO L78 Accepts]: Start accepts. Automaton has 16902 states and 23454 transitions. Word has length 389 [2022-11-19 07:07:54,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:54,386 INFO L495 AbstractCegarLoop]: Abstraction has 16902 states and 23454 transitions. [2022-11-19 07:07:54,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 07:07:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 16902 states and 23454 transitions. [2022-11-19 07:07:54,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-19 07:07:54,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:54,444 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:54,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:07:54,445 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1866160430, now seen corresponding path program 1 times [2022-11-19 07:07:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:54,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629092130] [2022-11-19 07:07:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-19 07:07:55,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:55,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629092130] [2022-11-19 07:07:55,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629092130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:55,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:55,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321802398] [2022-11-19 07:07:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:55,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:55,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:55,496 INFO L87 Difference]: Start difference. First operand 16902 states and 23454 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-19 07:08:03,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:04,283 INFO L93 Difference]: Finished difference Result 40164 states and 55770 transitions. [2022-11-19 07:08:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:04,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 402 [2022-11-19 07:08:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:04,364 INFO L225 Difference]: With dead ends: 40164 [2022-11-19 07:08:04,364 INFO L226 Difference]: Without dead ends: 23716 [2022-11-19 07:08:04,405 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 [2022-11-19 07:08:04,406 INFO L413 NwaCegarLoop]: 4056 mSDtfsCounter, 2752 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 6887 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:04,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 6887 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 07:08:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23716 states. [2022-11-19 07:08:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23716 to 23674. [2022-11-19 07:08:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23674 states, 14380 states have (on average 1.2801112656467315) internal successors, (18408), 14783 states have internal predecessors, (18408), 7015 states have call successors, (7015), 2352 states have call predecessors, (7015), 2278 states have return successors, (7406), 6837 states have call predecessors, (7406), 7013 states have call successors, (7406) [2022-11-19 07:08:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23674 states to 23674 states and 32829 transitions. [2022-11-19 07:08:05,776 INFO L78 Accepts]: Start accepts. Automaton has 23674 states and 32829 transitions. Word has length 402 [2022-11-19 07:08:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:05,777 INFO L495 AbstractCegarLoop]: Abstraction has 23674 states and 32829 transitions. [2022-11-19 07:08:05,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-11-19 07:08:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 23674 states and 32829 transitions. [2022-11-19 07:08:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-11-19 07:08:05,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:05,843 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:08:05,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1099085872, now seen corresponding path program 1 times [2022-11-19 07:08:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:05,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208043791] [2022-11-19 07:08:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:05,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-11-19 07:08:08,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208043791] [2022-11-19 07:08:08,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208043791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307579651] [2022-11-19 07:08:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:08,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:08,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:08,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:08,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:08:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:11,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 7161 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:08:11,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-19 07:08:11,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:08:11,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307579651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:11,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:08:11,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-19 07:08:11,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455417272] [2022-11-19 07:08:11,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:11,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:11,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:11,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:11,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:11,715 INFO L87 Difference]: Start difference. First operand 23674 states and 32829 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:08:16,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:17,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:18,592 INFO L93 Difference]: Finished difference Result 46909 states and 65133 transitions. [2022-11-19 07:08:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:18,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 419 [2022-11-19 07:08:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:18,694 INFO L225 Difference]: With dead ends: 46909 [2022-11-19 07:08:18,694 INFO L226 Difference]: Without dead ends: 23689 [2022-11-19 07:08:18,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:08:18,778 INFO L413 NwaCegarLoop]: 2845 mSDtfsCounter, 1 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:18,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5687 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-19 07:08:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23689 states. [2022-11-19 07:08:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23689 to 23679. [2022-11-19 07:08:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23679 states, 14385 states have (on average 1.2800139033715676) internal successors, (18413), 14788 states have internal predecessors, (18413), 7015 states have call successors, (7015), 2352 states have call predecessors, (7015), 2278 states have return successors, (7406), 6837 states have call predecessors, (7406), 7013 states have call successors, (7406) [2022-11-19 07:08:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23679 states to 23679 states and 32834 transitions. [2022-11-19 07:08:20,794 INFO L78 Accepts]: Start accepts. Automaton has 23679 states and 32834 transitions. Word has length 419 [2022-11-19 07:08:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:20,795 INFO L495 AbstractCegarLoop]: Abstraction has 23679 states and 32834 transitions. [2022-11-19 07:08:20,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 07:08:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 23679 states and 32834 transitions. [2022-11-19 07:08:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-11-19 07:08:20,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:20,858 INFO L195 NwaCegarLoop]: trace histogram [16, 8, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:20,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:21,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:21,060 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:21,060 INFO L85 PathProgramCache]: Analyzing trace with hash -352460700, now seen corresponding path program 1 times [2022-11-19 07:08:21,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:21,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391368786] [2022-11-19 07:08:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:21,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-19 07:08:23,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:23,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391368786] [2022-11-19 07:08:23,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391368786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:23,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653210237] [2022-11-19 07:08:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:23,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:23,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:23,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:23,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:08:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:26,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 7369 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:08:26,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 128 proven. 1 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-19 07:08:26,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-11-19 07:08:27,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653210237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:08:27,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732124050] [2022-11-19 07:08:27,683 INFO L159 IcfgInterpreter]: Started Sifa with 288 locations of interest [2022-11-19 07:08:27,684 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:27,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:27,694 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:27,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:32,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 07:08:32,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 07:08:33,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 07:08:33,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 07:08:33,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 07:08:34,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 07:08:34,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 07:08:38,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:08:38,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:08:38,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 07:08:41,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,173 INFO L217 Elim1Store]: Index analysis took 179 ms [2022-11-19 07:08:42,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 233 select indices, 233 select index equivalence classes, 787 disjoint index pairs (out of 27028 index pairs), introduced 233 new quantified variables, introduced 0 case distinctions, treesize of input 1686 treesize of output 700 [2022-11-19 07:08:49,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:49,428 INFO L217 Elim1Store]: Index analysis took 123 ms [2022-11-19 07:08:49,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 233 select indices, 233 select index equivalence classes, 787 disjoint index pairs (out of 27028 index pairs), introduced 233 new quantified variables, introduced 0 case distinctions, treesize of input 1686 treesize of output 700 [2022-11-19 07:08:52,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:08:52,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:08:53,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:08:53,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:08:54,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:08:54,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:08:56,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:08:56,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:08:56,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:08:58,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:08:58,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:08:58,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:09:27,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:09:27,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-19 07:09:27,275 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:09:27,284 INFO L158 Benchmark]: Toolchain (without parser) took 226837.76ms. Allocated memory was 94.4MB in the beginning and 5.0GB in the end (delta: 4.9GB). Free memory was 66.1MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2022-11-19 07:09:27,285 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:09:27,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4139.94ms. Allocated memory was 94.4MB in the beginning and 226.5MB in the end (delta: 132.1MB). Free memory was 66.1MB in the beginning and 130.0MB in the end (delta: -63.9MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. [2022-11-19 07:09:27,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 391.07ms. Allocated memory is still 226.5MB. Free memory was 130.0MB in the beginning and 87.2MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-19 07:09:27,288 INFO L158 Benchmark]: Boogie Preprocessor took 506.01ms. Allocated memory is still 226.5MB. Free memory was 87.2MB in the beginning and 97.5MB in the end (delta: -10.3MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2022-11-19 07:09:27,289 INFO L158 Benchmark]: RCFGBuilder took 26141.43ms. Allocated memory was 226.5MB in the beginning and 690.0MB in the end (delta: 463.5MB). Free memory was 97.5MB in the beginning and 493.3MB in the end (delta: -395.8MB). Peak memory consumption was 348.7MB. Max. memory is 16.1GB. [2022-11-19 07:09:27,290 INFO L158 Benchmark]: TraceAbstraction took 195651.63ms. Allocated memory was 690.0MB in the beginning and 5.0GB in the end (delta: 4.3GB). Free memory was 493.3MB in the beginning and 3.6GB in the end (delta: -3.1GB). Peak memory consumption was 3.6GB. Max. memory is 16.1GB. [2022-11-19 07:09:27,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4139.94ms. Allocated memory was 94.4MB in the beginning and 226.5MB in the end (delta: 132.1MB). Free memory was 66.1MB in the beginning and 130.0MB in the end (delta: -63.9MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 391.07ms. Allocated memory is still 226.5MB. Free memory was 130.0MB in the beginning and 87.2MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 506.01ms. Allocated memory is still 226.5MB. Free memory was 87.2MB in the beginning and 97.5MB in the end (delta: -10.3MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * RCFGBuilder took 26141.43ms. Allocated memory was 226.5MB in the beginning and 690.0MB in the end (delta: 463.5MB). Free memory was 97.5MB in the beginning and 493.3MB in the end (delta: -395.8MB). Peak memory consumption was 348.7MB. Max. memory is 16.1GB. * TraceAbstraction took 195651.63ms. Allocated memory was 690.0MB in the beginning and 5.0GB in the end (delta: 4.3GB). Free memory was 493.3MB in the beginning and 3.6GB in the end (delta: -3.1GB). Peak memory consumption was 3.6GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:09:27,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS --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 d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 --- 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-8393723 [2022-11-19 07:09:29,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:09:29,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:09:29,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:09:29,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:09:29,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:09:29,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:09:29,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:09:29,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:09:29,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:09:29,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:09:29,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:09:29,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:09:29,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:09:29,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:09:29,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:09:29,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:09:29,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:09:29,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:09:29,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:09:29,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:09:29,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:09:29,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:09:29,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:09:29,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:09:29,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:09:29,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:09:29,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:09:29,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:09:29,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:09:29,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:09:29,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:09:29,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:09:29,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:09:29,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:09:29,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:09:29,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:09:29,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:09:29,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:09:29,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:09:29,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:09:29,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:09:29,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:09:29,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:09:29,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:09:29,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:09:29,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:09:29,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:09:29,916 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:09:29,917 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:09:29,917 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:09:29,917 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:09:29,918 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:09:29,918 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:09:29,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:09:29,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:09:29,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:09:29,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:09:29,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:09:29,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:09:29,921 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:09:29,921 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:09:29,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:09:29,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:09:29,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:09:29,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:09:29,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:09:29,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:09:29,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:29,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:09:29,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:09:29,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:09:29,924 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:09:29,924 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:09:29,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:09:29,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:09:29,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:09:29,925 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 [2022-11-19 07:09:30,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:09:30,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:09:30,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:09:30,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:09:30,370 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:09:30,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-19 07:09:30,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data/ff428dcd9/e3a77387dc1442a09ad4e4574ebe0e21/FLAGdb207d31f [2022-11-19 07:09:31,396 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:09:31,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-19 07:09:31,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data/ff428dcd9/e3a77387dc1442a09ad4e4574ebe0e21/FLAGdb207d31f [2022-11-19 07:09:31,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/data/ff428dcd9/e3a77387dc1442a09ad4e4574ebe0e21 [2022-11-19 07:09:31,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:09:31,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:09:31,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:09:31,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:09:31,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:09:31,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:31" (1/1) ... [2022-11-19 07:09:31,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b770c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:31, skipping insertion in model container [2022-11-19 07:09:31,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:31" (1/1) ... [2022-11-19 07:09:31,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:09:32,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:09:34,872 WARN L234 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-19 07:09:35,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:35,180 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:09:35,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:09:35,693 WARN L234 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-19 07:09:35,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:35,730 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:09:36,502 WARN L234 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_719caf4d-9ad9-4c9a-b812-3c650727ce6a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-19 07:09:36,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:36,729 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:09:36,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36 WrapperNode [2022-11-19 07:09:36,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:09:36,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:36,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:09:36,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:09:36,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:36,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,160 INFO L138 Inliner]: procedures = 494, calls = 4035, calls flagged for inlining = 166, calls inlined = 158, statements flattened = 7188 [2022-11-19 07:09:37,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:37,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:09:37,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:09:37,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:09:37,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:09:37,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:09:37,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:09:37,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:09:37,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (1/1) ... [2022-11-19 07:09:37,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:37,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:37,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:09:37,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:09:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-19 07:09:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-19 07:09:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2022-11-19 07:09:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2022-11-19 07:09:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2022-11-19 07:09:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2022-11-19 07:09:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:09:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:09:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:09:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:09:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2022-11-19 07:09:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2022-11-19 07:09:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2022-11-19 07:09:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2022-11-19 07:09:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-19 07:09:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-19 07:09:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2022-11-19 07:09:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2022-11-19 07:09:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2022-11-19 07:09:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2022-11-19 07:09:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2022-11-19 07:09:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2022-11-19 07:09:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2022-11-19 07:09:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2022-11-19 07:09:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2022-11-19 07:09:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2022-11-19 07:09:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2022-11-19 07:09:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2022-11-19 07:09:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-19 07:09:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-19 07:09:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2022-11-19 07:09:37,720 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2022-11-19 07:09:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 07:09:37,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 07:09:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 07:09:37,720 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 07:09:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-19 07:09:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-19 07:09:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2022-11-19 07:09:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2022-11-19 07:09:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:09:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2022-11-19 07:09:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2022-11-19 07:09:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2022-11-19 07:09:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2022-11-19 07:09:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:09:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 07:09:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 07:09:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:09:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:09:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2022-11-19 07:09:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2022-11-19 07:09:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2022-11-19 07:09:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2022-11-19 07:09:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2022-11-19 07:09:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2022-11-19 07:09:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-19 07:09:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-19 07:09:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2022-11-19 07:09:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2022-11-19 07:09:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb [2022-11-19 07:09:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb [2022-11-19 07:09:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2022-11-19 07:09:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2022-11-19 07:09:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:09:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:09:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2022-11-19 07:09:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2022-11-19 07:09:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-19 07:09:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-19 07:09:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-11-19 07:09:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-11-19 07:09:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2022-11-19 07:09:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2022-11-19 07:09:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2022-11-19 07:09:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2022-11-19 07:09:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2022-11-19 07:09:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2022-11-19 07:09:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2022-11-19 07:09:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2022-11-19 07:09:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 07:09:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 07:09:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2022-11-19 07:09:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2022-11-19 07:09:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:09:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:09:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2022-11-19 07:09:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2022-11-19 07:09:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:09:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2022-11-19 07:09:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2022-11-19 07:09:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-19 07:09:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-19 07:09:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:09:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:09:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-19 07:09:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-19 07:09:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-19 07:09:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2022-11-19 07:09:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2022-11-19 07:09:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2022-11-19 07:09:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2022-11-19 07:09:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2022-11-19 07:09:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2022-11-19 07:09:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 07:09:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 07:09:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:09:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:09:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 07:09:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 07:09:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-19 07:09:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb [2022-11-19 07:09:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb [2022-11-19 07:09:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2022-11-19 07:09:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2022-11-19 07:09:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:09:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:09:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 07:09:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 07:09:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2022-11-19 07:09:37,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2022-11-19 07:09:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:09:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2022-11-19 07:09:37,751 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2022-11-19 07:09:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:09:37,752 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:09:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2022-11-19 07:09:37,752 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2022-11-19 07:09:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2022-11-19 07:09:37,752 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2022-11-19 07:09:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 07:09:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:09:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:09:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-19 07:09:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:09:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:09:37,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:09:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2022-11-19 07:09:37,753 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2022-11-19 07:09:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2022-11-19 07:09:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2022-11-19 07:09:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2022-11-19 07:09:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2022-11-19 07:09:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2022-11-19 07:09:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2022-11-19 07:09:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2022-11-19 07:09:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2022-11-19 07:09:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2022-11-19 07:09:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2022-11-19 07:09:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2022-11-19 07:09:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2022-11-19 07:09:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-19 07:09:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-19 07:09:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2022-11-19 07:09:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2022-11-19 07:09:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:09:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:09:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:09:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:09:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2022-11-19 07:09:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2022-11-19 07:09:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2022-11-19 07:09:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2022-11-19 07:09:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-19 07:09:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-19 07:09:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:09:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:09:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2022-11-19 07:09:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2022-11-19 07:09:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2022-11-19 07:09:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2022-11-19 07:09:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2022-11-19 07:09:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2022-11-19 07:09:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:09:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:09:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2022-11-19 07:09:37,759 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2022-11-19 07:09:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2022-11-19 07:09:37,760 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2022-11-19 07:09:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2022-11-19 07:09:37,760 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2022-11-19 07:09:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 07:09:37,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 07:09:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2022-11-19 07:09:37,762 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2022-11-19 07:09:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:09:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:09:37,762 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:09:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2022-11-19 07:09:37,763 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2022-11-19 07:09:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2022-11-19 07:09:37,763 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2022-11-19 07:09:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2022-11-19 07:09:37,763 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2022-11-19 07:09:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:09:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-19 07:09:37,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-19 07:09:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-19 07:09:37,764 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-19 07:09:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 07:09:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 07:09:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 07:09:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:09:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:09:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2022-11-19 07:09:37,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2022-11-19 07:09:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2022-11-19 07:09:37,765 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2022-11-19 07:09:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2022-11-19 07:09:37,765 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2022-11-19 07:09:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 07:09:37,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 07:09:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:09:37,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:09:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-19 07:09:37,766 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-19 07:09:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2022-11-19 07:09:37,766 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2022-11-19 07:09:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 07:09:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 07:09:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2022-11-19 07:09:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2022-11-19 07:09:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 07:09:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 07:09:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2022-11-19 07:09:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2022-11-19 07:09:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2022-11-19 07:09:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2022-11-19 07:09:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2022-11-19 07:09:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2022-11-19 07:09:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2022-11-19 07:09:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2022-11-19 07:09:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 07:09:37,769 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 07:09:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2022-11-19 07:09:37,769 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2022-11-19 07:09:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2022-11-19 07:09:37,774 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2022-11-19 07:09:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2022-11-19 07:09:37,774 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2022-11-19 07:09:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2022-11-19 07:09:37,774 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2022-11-19 07:09:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:09:37,775 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:09:37,775 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2022-11-19 07:09:37,775 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2022-11-19 07:09:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-19 07:09:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-19 07:09:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-19 07:09:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-19 07:09:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:09:37,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:09:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2022-11-19 07:09:37,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2022-11-19 07:09:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2022-11-19 07:09:37,778 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2022-11-19 07:09:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2022-11-19 07:09:37,778 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2022-11-19 07:09:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2022-11-19 07:09:37,778 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2022-11-19 07:09:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2022-11-19 07:09:37,778 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2022-11-19 07:09:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2022-11-19 07:09:37,779 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2022-11-19 07:09:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2022-11-19 07:09:37,779 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2022-11-19 07:09:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2022-11-19 07:09:37,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2022-11-19 07:09:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2022-11-19 07:09:37,780 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2022-11-19 07:09:37,780 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2022-11-19 07:09:37,780 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2022-11-19 07:09:37,780 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2022-11-19 07:09:37,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2022-11-19 07:09:37,780 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2022-11-19 07:09:37,780 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2022-11-19 07:09:37,780 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 07:09:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 07:09:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2022-11-19 07:09:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2022-11-19 07:09:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-19 07:09:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-19 07:09:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2022-11-19 07:09:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2022-11-19 07:09:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2022-11-19 07:09:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2022-11-19 07:09:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2022-11-19 07:09:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2022-11-19 07:09:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2022-11-19 07:09:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2022-11-19 07:09:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-19 07:09:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-19 07:09:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2022-11-19 07:09:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2022-11-19 07:09:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-19 07:09:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-19 07:09:38,988 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:09:38,992 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:09:40,127 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:11:39,062 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:11:39,082 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:11:39,082 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:11:39,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:11:39 BoogieIcfgContainer [2022-11-19 07:11:39,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:11:39,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:11:39,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:11:39,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:11:39,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:09:31" (1/3) ... [2022-11-19 07:11:39,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18623b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:11:39, skipping insertion in model container [2022-11-19 07:11:39,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:36" (2/3) ... [2022-11-19 07:11:39,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18623b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:11:39, skipping insertion in model container [2022-11-19 07:11:39,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:11:39" (3/3) ... [2022-11-19 07:11:39,096 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-19 07:11:39,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:11:39,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:11:39,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:11:39,210 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;@360884f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:11:39,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:11:39,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 2499 states, 1664 states have (on average 1.3233173076923077) internal successors, (2202), 1711 states have internal predecessors, (2202), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) [2022-11-19 07:11:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 07:11:39,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:39,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:39,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1106000251, now seen corresponding path program 1 times [2022-11-19 07:11:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:11:39,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486505767] [2022-11-19 07:11:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:39,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:11:39,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:11:39,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:11:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:40,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:11:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:40,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:40,808 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:11:40,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486505767] [2022-11-19 07:11:40,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486505767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:40,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:40,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:11:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547768045] [2022-11-19 07:11:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:40,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:11:40,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:11:40,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:11:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:11:40,867 INFO L87 Difference]: Start difference. First operand has 2499 states, 1664 states have (on average 1.3233173076923077) internal successors, (2202), 1711 states have internal predecessors, (2202), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:41,113 INFO L93 Difference]: Finished difference Result 4993 states and 7459 transitions. [2022-11-19 07:11:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:11:41,115 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-19 07:11:41,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:41,144 INFO L225 Difference]: With dead ends: 4993 [2022-11-19 07:11:41,144 INFO L226 Difference]: Without dead ends: 2486 [2022-11-19 07:11:41,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:11:41,176 INFO L413 NwaCegarLoop]: 3584 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:41,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:11:41,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2022-11-19 07:11:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2022-11-19 07:11:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 1659 states have (on average 1.3188667872212176) internal successors, (2188), 1698 states have internal predecessors, (2188), 695 states have call successors, (695), 132 states have call predecessors, (695), 131 states have return successors, (684), 680 states have call predecessors, (684), 684 states have call successors, (684) [2022-11-19 07:11:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3567 transitions. [2022-11-19 07:11:41,442 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3567 transitions. Word has length 35 [2022-11-19 07:11:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:41,443 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3567 transitions. [2022-11-19 07:11:41,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3567 transitions. [2022-11-19 07:11:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 07:11:41,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:41,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:41,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-19 07:11:41,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:41,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1240013757, now seen corresponding path program 1 times [2022-11-19 07:11:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:11:41,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643832478] [2022-11-19 07:11:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:41,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:41,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:11:41,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:11:41,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:11:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:43,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:11:43,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:43,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:43,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:11:43,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643832478] [2022-11-19 07:11:43,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643832478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:43,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498427342] [2022-11-19 07:11:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:43,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:43,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:11:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:43,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:43,350 INFO L87 Difference]: Start difference. First operand 2486 states and 3567 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:44,083 INFO L93 Difference]: Finished difference Result 7386 states and 10672 transitions. [2022-11-19 07:11:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:44,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-19 07:11:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:44,118 INFO L225 Difference]: With dead ends: 7386 [2022-11-19 07:11:44,118 INFO L226 Difference]: Without dead ends: 4908 [2022-11-19 07:11:44,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:44,135 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 3474 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 7836 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:44,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 7836 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:11:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4908 states. [2022-11-19 07:11:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4908 to 4886. [2022-11-19 07:11:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 3262 states have (on average 1.3200490496627835) internal successors, (4306), 3334 states have internal predecessors, (4306), 1366 states have call successors, (1366), 263 states have call predecessors, (1366), 257 states have return successors, (1380), 1338 states have call predecessors, (1380), 1355 states have call successors, (1380) [2022-11-19 07:11:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 7052 transitions. [2022-11-19 07:11:44,459 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 7052 transitions. Word has length 35 [2022-11-19 07:11:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:44,460 INFO L495 AbstractCegarLoop]: Abstraction has 4886 states and 7052 transitions. [2022-11-19 07:11:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 7052 transitions. [2022-11-19 07:11:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 07:11:44,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:44,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:44,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:11:44,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:44,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:44,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:44,685 INFO L85 PathProgramCache]: Analyzing trace with hash 239696532, now seen corresponding path program 1 times [2022-11-19 07:11:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:11:44,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744177746] [2022-11-19 07:11:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:44,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:44,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:11:44,691 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:11:44,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:11:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:45,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:11:45,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:46,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:46,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:11:46,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744177746] [2022-11-19 07:11:46,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744177746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:46,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:46,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:46,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460569828] [2022-11-19 07:11:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:46,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:11:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:46,182 INFO L87 Difference]: Start difference. First operand 4886 states and 7052 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:46,970 INFO L93 Difference]: Finished difference Result 12232 states and 17780 transitions. [2022-11-19 07:11:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:46,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-19 07:11:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:47,020 INFO L225 Difference]: With dead ends: 12232 [2022-11-19 07:11:47,020 INFO L226 Difference]: Without dead ends: 7354 [2022-11-19 07:11:47,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:47,049 INFO L413 NwaCegarLoop]: 4270 mSDtfsCounter, 3542 mSDsluCounter, 3585 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3542 SdHoareTripleChecker+Valid, 7855 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:47,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3542 Valid, 7855 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:11:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2022-11-19 07:11:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7332. [2022-11-19 07:11:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7332 states, 4898 states have (on average 1.3189056757860351) internal successors, (6460), 4999 states have internal predecessors, (6460), 2045 states have call successors, (2045), 394 states have call predecessors, (2045), 388 states have return successors, (2122), 2013 states have call predecessors, (2122), 2034 states have call successors, (2122) [2022-11-19 07:11:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7332 states to 7332 states and 10627 transitions. [2022-11-19 07:11:47,527 INFO L78 Accepts]: Start accepts. Automaton has 7332 states and 10627 transitions. Word has length 36 [2022-11-19 07:11:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:47,528 INFO L495 AbstractCegarLoop]: Abstraction has 7332 states and 10627 transitions. [2022-11-19 07:11:47,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 7332 states and 10627 transitions. [2022-11-19 07:11:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 07:11:47,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:47,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:47,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:11:47,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:47,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1662840198, now seen corresponding path program 1 times [2022-11-19 07:11:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:11:47,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905668263] [2022-11-19 07:11:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:47,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:47,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:11:47,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:11:47,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:11:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:48,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:11:48,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:49,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:49,268 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:11:49,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905668263] [2022-11-19 07:11:49,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905668263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:49,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:49,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:49,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249827872] [2022-11-19 07:11:49,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:49,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:49,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:11:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:49,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:49,270 INFO L87 Difference]: Start difference. First operand 7332 states and 10627 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:50,113 INFO L93 Difference]: Finished difference Result 17121 states and 25023 transitions. [2022-11-19 07:11:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:50,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-19 07:11:50,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:50,186 INFO L225 Difference]: With dead ends: 17121 [2022-11-19 07:11:50,186 INFO L226 Difference]: Without dead ends: 9797 [2022-11-19 07:11:50,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:50,233 INFO L413 NwaCegarLoop]: 4243 mSDtfsCounter, 3543 mSDsluCounter, 3585 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3543 SdHoareTripleChecker+Valid, 7828 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:50,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3543 Valid, 7828 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:11:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9797 states. [2022-11-19 07:11:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9797 to 9775. [2022-11-19 07:11:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9775 states, 6533 states have (on average 1.3182305219654065) internal successors, (8612), 6663 states have internal predecessors, (8612), 2722 states have call successors, (2722), 525 states have call predecessors, (2722), 519 states have return successors, (2887), 2686 states have call predecessors, (2887), 2711 states have call successors, (2887) [2022-11-19 07:11:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9775 states to 9775 states and 14221 transitions. [2022-11-19 07:11:50,968 INFO L78 Accepts]: Start accepts. Automaton has 9775 states and 14221 transitions. Word has length 37 [2022-11-19 07:11:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:50,969 INFO L495 AbstractCegarLoop]: Abstraction has 9775 states and 14221 transitions. [2022-11-19 07:11:50,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9775 states and 14221 transitions. [2022-11-19 07:11:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 07:11:50,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:50,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:50,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:11:51,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:51,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:51,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1828932953, now seen corresponding path program 1 times [2022-11-19 07:11:51,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:11:51,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038108507] [2022-11-19 07:11:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:51,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:11:51,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:11:51,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:11:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:52,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:11:52,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:52,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:52,454 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:11:52,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038108507] [2022-11-19 07:11:52,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038108507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:52,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:52,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:52,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710391702] [2022-11-19 07:11:52,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:52,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:52,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:11:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:52,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:52,456 INFO L87 Difference]: Start difference. First operand 9775 states and 14221 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:53,664 INFO L93 Difference]: Finished difference Result 29243 states and 42555 transitions. [2022-11-19 07:11:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-19 07:11:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:53,774 INFO L225 Difference]: With dead ends: 29243 [2022-11-19 07:11:53,774 INFO L226 Difference]: Without dead ends: 19476 [2022-11-19 07:11:53,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:53,819 INFO L413 NwaCegarLoop]: 4773 mSDtfsCounter, 3525 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3525 SdHoareTripleChecker+Valid, 8314 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:53,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3525 Valid, 8314 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:11:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19476 states. [2022-11-19 07:11:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19476 to 19468. [2022-11-19 07:11:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19468 states, 13005 states have (on average 1.3175701653210303) internal successors, (17135), 13255 states have internal predecessors, (17135), 5424 states have call successors, (5424), 1049 states have call predecessors, (5424), 1038 states have return successors, (5765), 5363 states have call predecessors, (5765), 5413 states have call successors, (5765) [2022-11-19 07:11:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19468 states to 19468 states and 28324 transitions. [2022-11-19 07:11:55,294 INFO L78 Accepts]: Start accepts. Automaton has 19468 states and 28324 transitions. Word has length 36 [2022-11-19 07:11:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:55,295 INFO L495 AbstractCegarLoop]: Abstraction has 19468 states and 28324 transitions. [2022-11-19 07:11:55,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 19468 states and 28324 transitions. [2022-11-19 07:11:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 07:11:55,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:55,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:55,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:11:55,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:55,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1811228317, now seen corresponding path program 1 times [2022-11-19 07:11:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:11:55,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056075547] [2022-11-19 07:11:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:55,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:11:55,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:11:55,519 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:11:55,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:11:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:56,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:11:56,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:56,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:56,847 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:11:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056075547] [2022-11-19 07:11:56,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056075547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:56,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:56,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:56,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303477900] [2022-11-19 07:11:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:56,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:56,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:11:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:56,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:56,848 INFO L87 Difference]: Start difference. First operand 19468 states and 28324 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:11:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:58,036 INFO L93 Difference]: Finished difference Result 38912 states and 56603 transitions. [2022-11-19 07:11:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:11:58,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-19 07:11:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:58,127 INFO L225 Difference]: With dead ends: 38912 [2022-11-19 07:11:58,127 INFO L226 Difference]: Without dead ends: 19452 [2022-11-19 07:11:58,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:58,196 INFO L413 NwaCegarLoop]: 3562 mSDtfsCounter, 3552 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3552 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:58,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3552 Valid, 3562 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:11:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19452 states. [2022-11-19 07:11:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19452 to 19452. [2022-11-19 07:11:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19452 states, 12997 states have (on average 1.317150111564207) internal successors, (17119), 13247 states have internal predecessors, (17119), 5416 states have call successors, (5416), 1049 states have call predecessors, (5416), 1038 states have return successors, (5745), 5355 states have call predecessors, (5745), 5405 states have call successors, (5745) [2022-11-19 07:12:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19452 states to 19452 states and 28280 transitions. [2022-11-19 07:12:00,039 INFO L78 Accepts]: Start accepts. Automaton has 19452 states and 28280 transitions. Word has length 38 [2022-11-19 07:12:00,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:00,040 INFO L495 AbstractCegarLoop]: Abstraction has 19452 states and 28280 transitions. [2022-11-19 07:12:00,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:12:00,040 INFO L276 IsEmpty]: Start isEmpty. Operand 19452 states and 28280 transitions. [2022-11-19 07:12:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 07:12:00,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:00,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:00,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-19 07:12:00,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:00,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1040852117, now seen corresponding path program 1 times [2022-11-19 07:12:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:00,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133992688] [2022-11-19 07:12:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:00,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:00,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:00,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:00,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:12:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:01,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:01,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:01,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:01,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:01,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133992688] [2022-11-19 07:12:01,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133992688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:01,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:01,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168290837] [2022-11-19 07:12:01,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:01,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:01,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:01,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:01,855 INFO L87 Difference]: Start difference. First operand 19452 states and 28280 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:12:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:03,293 INFO L93 Difference]: Finished difference Result 43551 states and 63805 transitions. [2022-11-19 07:12:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:03,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-19 07:12:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:03,410 INFO L225 Difference]: With dead ends: 43551 [2022-11-19 07:12:03,410 INFO L226 Difference]: Without dead ends: 24107 [2022-11-19 07:12:03,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:03,492 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 3540 mSDsluCounter, 3580 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3540 SdHoareTripleChecker+Valid, 7818 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:03,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3540 Valid, 7818 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:12:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24107 states. [2022-11-19 07:12:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24107 to 24085. [2022-11-19 07:12:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24085 states, 16098 states have (on average 1.3165610634861473) internal successors, (21194), 16400 states have internal predecessors, (21194), 6690 states have call successors, (6690), 1307 states have call predecessors, (6690), 1296 states have return successors, (7125), 6623 states have call predecessors, (7125), 6679 states have call successors, (7125) [2022-11-19 07:12:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24085 states to 24085 states and 35009 transitions. [2022-11-19 07:12:06,046 INFO L78 Accepts]: Start accepts. Automaton has 24085 states and 35009 transitions. Word has length 38 [2022-11-19 07:12:06,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:06,046 INFO L495 AbstractCegarLoop]: Abstraction has 24085 states and 35009 transitions. [2022-11-19 07:12:06,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:12:06,047 INFO L276 IsEmpty]: Start isEmpty. Operand 24085 states and 35009 transitions. [2022-11-19 07:12:06,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 07:12:06,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:06,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:06,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:06,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:06,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1531446698, now seen corresponding path program 1 times [2022-11-19 07:12:06,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:06,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790449381] [2022-11-19 07:12:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:06,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:06,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:06,274 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:06,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:12:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:07,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:07,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:07,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:07,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:07,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790449381] [2022-11-19 07:12:07,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790449381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:07,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:07,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235596183] [2022-11-19 07:12:07,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:07,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:07,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:07,801 INFO L87 Difference]: Start difference. First operand 24085 states and 35009 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:12:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:09,213 INFO L93 Difference]: Finished difference Result 48142 states and 69959 transitions. [2022-11-19 07:12:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:09,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-19 07:12:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:09,311 INFO L225 Difference]: With dead ends: 48142 [2022-11-19 07:12:09,311 INFO L226 Difference]: Without dead ends: 24065 [2022-11-19 07:12:09,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:09,392 INFO L413 NwaCegarLoop]: 3558 mSDtfsCounter, 3547 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3547 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:09,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3547 Valid, 3558 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:12:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24065 states. [2022-11-19 07:12:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24065 to 24065. [2022-11-19 07:12:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24065 states, 16088 states have (on average 1.3161362506215812) internal successors, (21174), 16390 states have internal predecessors, (21174), 6680 states have call successors, (6680), 1307 states have call predecessors, (6680), 1296 states have return successors, (7095), 6613 states have call predecessors, (7095), 6669 states have call successors, (7095) [2022-11-19 07:12:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24065 states to 24065 states and 34949 transitions. [2022-11-19 07:12:11,909 INFO L78 Accepts]: Start accepts. Automaton has 24065 states and 34949 transitions. Word has length 39 [2022-11-19 07:12:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:11,910 INFO L495 AbstractCegarLoop]: Abstraction has 24065 states and 34949 transitions. [2022-11-19 07:12:11,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:12:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 24065 states and 34949 transitions. [2022-11-19 07:12:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 07:12:11,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:11,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:11,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:12,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:12,133 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash 15630693, now seen corresponding path program 1 times [2022-11-19 07:12:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:12,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534700964] [2022-11-19 07:12:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:12,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:12,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:12,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:12:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:13,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:13,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:13,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:13,671 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:13,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534700964] [2022-11-19 07:12:13,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534700964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:13,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:13,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:13,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280642152] [2022-11-19 07:12:13,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:13,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:13,674 INFO L87 Difference]: Start difference. First operand 24065 states and 34949 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:12:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:16,928 INFO L93 Difference]: Finished difference Result 65171 states and 94170 transitions. [2022-11-19 07:12:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:16,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-19 07:12:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:17,114 INFO L225 Difference]: With dead ends: 65171 [2022-11-19 07:12:17,115 INFO L226 Difference]: Without dead ends: 41114 [2022-11-19 07:12:17,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:17,215 INFO L413 NwaCegarLoop]: 4953 mSDtfsCounter, 2510 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 8488 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:17,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2510 Valid, 8488 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:12:17,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41114 states. [2022-11-19 07:12:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41114 to 41089. [2022-11-19 07:12:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41089 states, 27439 states have (on average 1.3129851670979262) internal successors, (36027), 27951 states have internal predecessors, (36027), 11275 states have call successors, (11275), 2395 states have call predecessors, (11275), 2374 states have return successors, (11890), 11154 states have call predecessors, (11890), 11264 states have call successors, (11890) [2022-11-19 07:12:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41089 states to 41089 states and 59192 transitions. [2022-11-19 07:12:20,847 INFO L78 Accepts]: Start accepts. Automaton has 41089 states and 59192 transitions. Word has length 41 [2022-11-19 07:12:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:20,848 INFO L495 AbstractCegarLoop]: Abstraction has 41089 states and 59192 transitions. [2022-11-19 07:12:20,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:12:20,848 INFO L276 IsEmpty]: Start isEmpty. Operand 41089 states and 59192 transitions. [2022-11-19 07:12:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 07:12:20,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:20,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:20,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:21,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:21,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:21,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1977066534, now seen corresponding path program 1 times [2022-11-19 07:12:21,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:21,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825855550] [2022-11-19 07:12:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:21,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:21,070 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:21,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:12:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:22,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:22,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:22,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:22,549 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:22,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825855550] [2022-11-19 07:12:22,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825855550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:22,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:22,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:22,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086616808] [2022-11-19 07:12:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:22,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:22,552 INFO L87 Difference]: Start difference. First operand 41089 states and 59192 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:12:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:25,676 INFO L93 Difference]: Finished difference Result 82130 states and 118275 transitions. [2022-11-19 07:12:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:25,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-19 07:12:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:25,852 INFO L225 Difference]: With dead ends: 82130 [2022-11-19 07:12:25,852 INFO L226 Difference]: Without dead ends: 41049 [2022-11-19 07:12:25,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:25,989 INFO L413 NwaCegarLoop]: 3554 mSDtfsCounter, 3542 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3542 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:25,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3542 Valid, 3554 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:12:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41049 states. [2022-11-19 07:12:28,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41049 to 41049. [2022-11-19 07:12:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41049 states, 27419 states have (on average 1.3124840439111565) internal successors, (35987), 27931 states have internal predecessors, (35987), 11255 states have call successors, (11255), 2395 states have call predecessors, (11255), 2374 states have return successors, (11830), 11134 states have call predecessors, (11830), 11244 states have call successors, (11830) [2022-11-19 07:12:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41049 states to 41049 states and 59072 transitions. [2022-11-19 07:12:29,111 INFO L78 Accepts]: Start accepts. Automaton has 41049 states and 59072 transitions. Word has length 40 [2022-11-19 07:12:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:29,112 INFO L495 AbstractCegarLoop]: Abstraction has 41049 states and 59072 transitions. [2022-11-19 07:12:29,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:12:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 41049 states and 59072 transitions. [2022-11-19 07:12:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 07:12:29,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:29,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:29,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:29,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:29,314 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:29,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash 859672301, now seen corresponding path program 1 times [2022-11-19 07:12:29,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:29,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592777180] [2022-11-19 07:12:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:29,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:29,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:29,316 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:12:29,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719caf4d-9ad9-4c9a-b812-3c650727ce6a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:12:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:30,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:12:30,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:30,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:30,705 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:30,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592777180] [2022-11-19 07:12:30,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592777180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:30,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:30,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:30,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059062323] [2022-11-19 07:12:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:30,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:30,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:30,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:30,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:30,708 INFO L87 Difference]: Start difference. First operand 41049 states and 59072 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)