./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c --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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 27ade89d9994325493c9462293c9b3d2b8ab96fa12e80a31b520a55487db53c4 --- 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 07:41:57,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:41:57,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:41:57,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:41:57,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:41:57,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:41:57,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:41:57,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:41:57,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:41:57,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:41:57,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:41:57,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:41:57,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:41:57,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:41:57,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:41:57,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:41:57,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:41:57,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:41:57,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:41:57,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:41:57,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:41:57,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:41:57,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:41:57,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:41:57,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:41:57,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:41:57,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:41:57,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:41:57,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:41:57,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:41:57,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:41:57,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:41:57,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:41:57,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:41:57,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:41:57,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:41:57,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:41:57,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:41:57,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:41:57,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:41:57,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:41:57,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:41:57,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:41:57,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:41:57,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:41:57,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:41:57,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:41:57,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:41:57,603 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:41:57,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:41:57,604 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:41:57,604 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:41:57,604 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:41:57,604 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:41:57,605 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:41:57,605 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:41:57,605 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:41:57,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:41:57,606 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:41:57,606 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:41:57,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:41:57,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:41:57,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:41:57,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:41:57,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:41:57,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:41:57,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:41:57,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:41:57,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:41:57,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:41:57,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:41:57,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:41:57,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:41:57,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:41:57,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:41:57,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:41:57,611 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:41:57,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:41:57,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:41:57,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:41:57,612 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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27ade89d9994325493c9462293c9b3d2b8ab96fa12e80a31b520a55487db53c4 [2022-11-19 07:41:57,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:41:57,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:41:57,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:41:57,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:41:57,943 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:41:57,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-19 07:41:58,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data/8e5807725/b33b7c94d77a4c029efe5fb1c8197609/FLAG8b95f5048 [2022-11-19 07:41:58,716 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:41:58,717 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-19 07:41:58,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data/8e5807725/b33b7c94d77a4c029efe5fb1c8197609/FLAG8b95f5048 [2022-11-19 07:41:58,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data/8e5807725/b33b7c94d77a4c029efe5fb1c8197609 [2022-11-19 07:41:58,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:41:58,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:41:58,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:41:58,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:41:58,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:41:58,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:58" (1/1) ... [2022-11-19 07:41:58,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5017179f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:58, skipping insertion in model container [2022-11-19 07:41:58,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:58" (1/1) ... [2022-11-19 07:41:58,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:41:59,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:41:59,276 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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c[1107,1120] [2022-11-19 07:41:59,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:41:59,662 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:41:59,686 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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c[1107,1120] [2022-11-19 07:41:59,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:41:59,911 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:41:59,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59 WrapperNode [2022-11-19 07:41:59,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:41:59,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:41:59,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:41:59,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:41:59,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:41:59,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,115 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2921 [2022-11-19 07:42:00,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:42:00,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:42:00,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:42:00,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:42:00,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:42:00,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:42:00,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:42:00,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:42:00,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (1/1) ... [2022-11-19 07:42:00,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:42:00,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:42:00,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:42:00,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:42:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:42:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:42:00,891 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:42:00,896 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:42:03,410 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:42:10,877 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:42:10,877 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:42:10,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:10 BoogieIcfgContainer [2022-11-19 07:42:10,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:42:10,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:42:10,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:42:10,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:42:10,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:58" (1/3) ... [2022-11-19 07:42:10,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d846f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:10, skipping insertion in model container [2022-11-19 07:42:10,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:59" (2/3) ... [2022-11-19 07:42:10,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d846f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:10, skipping insertion in model container [2022-11-19 07:42:10,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:10" (3/3) ... [2022-11-19 07:42:10,889 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-19 07:42:10,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:42:10,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:42:10,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:42:10,965 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;@68342243, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:42:10,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:42:10,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:42:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:42:10,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:10,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:42:10,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash 61594366, now seen corresponding path program 1 times [2022-11-19 07:42:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:10,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178804170] [2022-11-19 07:42:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:42:11,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:42:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:42:11,675 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:42:11,677 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:42:11,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:42:11,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:42:11,686 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:42:11,690 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:42:11,715 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 07:42:11,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:42:11 BoogieIcfgContainer [2022-11-19 07:42:11,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:42:11,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:42:11,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:42:11,736 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:42:11,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:10" (3/4) ... [2022-11-19 07:42:11,740 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:42:11,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:42:11,743 INFO L158 Benchmark]: Toolchain (without parser) took 12835.50ms. Allocated memory was 104.9MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 62.0MB in the beginning and 719.9MB in the end (delta: -657.9MB). Peak memory consumption was 596.0MB. Max. memory is 16.1GB. [2022-11-19 07:42:11,744 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:42:11,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1003.45ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 61.8MB in the beginning and 80.1MB in the end (delta: -18.3MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-11-19 07:42:11,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 202.86ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 56.3MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-19 07:42:11,751 INFO L158 Benchmark]: Boogie Preprocessor took 212.20ms. Allocated memory is still 132.1MB. Free memory was 56.3MB in the beginning and 75.7MB in the end (delta: -19.3MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-19 07:42:11,752 INFO L158 Benchmark]: RCFGBuilder took 10550.26ms. Allocated memory was 132.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 75.7MB in the beginning and 780.7MB in the end (delta: -705.1MB). Peak memory consumption was 523.1MB. Max. memory is 16.1GB. [2022-11-19 07:42:11,753 INFO L158 Benchmark]: TraceAbstraction took 851.54ms. Allocated memory is still 1.4GB. Free memory was 780.7MB in the beginning and 721.0MB in the end (delta: 59.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-19 07:42:11,754 INFO L158 Benchmark]: Witness Printer took 6.00ms. Allocated memory is still 1.4GB. Free memory was 721.0MB in the beginning and 719.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:42:11,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1003.45ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 61.8MB in the beginning and 80.1MB in the end (delta: -18.3MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 202.86ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 56.3MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 212.20ms. Allocated memory is still 132.1MB. Free memory was 56.3MB in the beginning and 75.7MB in the end (delta: -19.3MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * RCFGBuilder took 10550.26ms. Allocated memory was 132.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 75.7MB in the beginning and 780.7MB in the end (delta: -705.1MB). Peak memory consumption was 523.1MB. Max. memory is 16.1GB. * TraceAbstraction took 851.54ms. Allocated memory is still 1.4GB. Free memory was 780.7MB in the beginning and 721.0MB in the end (delta: 59.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Witness Printer took 6.00ms. Allocated memory is still 1.4GB. Free memory was 721.0MB in the beginning and 719.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 173, overapproximation of bitwiseComplement at line 210, overapproximation of bitwiseAnd at line 152. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 12); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (12 - 1); [L28] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 1); [L29] const SORT_8 msb_SORT_8 = (SORT_8)1 << (1 - 1); [L31] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 4); [L32] const SORT_13 msb_SORT_13 = (SORT_13)1 << (4 - 1); [L34] const SORT_97 mask_SORT_97 = (SORT_97)-1 >> (sizeof(SORT_97) * 8 - 3); [L35] const SORT_97 msb_SORT_97 = (SORT_97)1 << (3 - 1); [L37] const SORT_305 mask_SORT_305 = (SORT_305)-1 >> (sizeof(SORT_305) * 8 - 2); [L38] const SORT_305 msb_SORT_305 = (SORT_305)1 << (2 - 1); [L40] const SORT_309 mask_SORT_309 = (SORT_309)-1 >> (sizeof(SORT_309) * 8 - 5); [L41] const SORT_309 msb_SORT_309 = (SORT_309)1 << (5 - 1); [L43] const SORT_311 mask_SORT_311 = (SORT_311)-1 >> (sizeof(SORT_311) * 8 - 6); [L44] const SORT_311 msb_SORT_311 = (SORT_311)1 << (6 - 1); [L46] const SORT_313 mask_SORT_313 = (SORT_313)-1 >> (sizeof(SORT_313) * 8 - 7); [L47] const SORT_313 msb_SORT_313 = (SORT_313)1 << (7 - 1); [L49] const SORT_315 mask_SORT_315 = (SORT_315)-1 >> (sizeof(SORT_315) * 8 - 8); [L50] const SORT_315 msb_SORT_315 = (SORT_315)1 << (8 - 1); [L52] const SORT_317 mask_SORT_317 = (SORT_317)-1 >> (sizeof(SORT_317) * 8 - 9); [L53] const SORT_317 msb_SORT_317 = (SORT_317)1 << (9 - 1); [L55] const SORT_319 mask_SORT_319 = (SORT_319)-1 >> (sizeof(SORT_319) * 8 - 10); [L56] const SORT_319 msb_SORT_319 = (SORT_319)1 << (10 - 1); [L58] const SORT_321 mask_SORT_321 = (SORT_321)-1 >> (sizeof(SORT_321) * 8 - 11); [L59] const SORT_321 msb_SORT_321 = (SORT_321)1 << (11 - 1); [L61] const SORT_8 var_18 = 0; [L62] const SORT_1 var_22 = 0; [L63] const SORT_1 var_25 = 2; [L64] const SORT_1 var_47 = 1; [L65] const SORT_8 var_52 = 1; [L66] const SORT_13 var_56 = 2; [L67] const SORT_13 var_61 = 9; [L68] const SORT_13 var_69 = 15; [L69] const SORT_13 var_74 = 1; [L70] const SORT_13 var_76 = 3; [L71] const SORT_13 var_79 = 5; [L72] const SORT_13 var_82 = 7; [L73] const SORT_13 var_85 = 11; [L74] const SORT_97 var_98 = 0; [L75] const SORT_13 var_111 = 8; [L76] const SORT_13 var_115 = 10; [L77] const SORT_13 var_119 = 13; [L78] const SORT_13 var_130 = 4; [L79] const SORT_13 var_132 = 12; [L80] const SORT_13 var_135 = 14; [L81] const SORT_13 var_141 = 6; [L82] const SORT_13 var_168 = 0; [L83] const SORT_97 var_216 = 1; [L84] const SORT_97 var_218 = 5; [L85] const SORT_1 var_245 = 4095; [L86] const SORT_321 var_592 = 0; [L88] SORT_1 input_2; [L89] SORT_1 input_3; [L90] SORT_1 input_4; [L91] SORT_1 input_5; [L92] SORT_1 input_6; [L93] SORT_1 input_7; [L94] SORT_8 input_9; [L95] SORT_8 input_10; [L96] SORT_8 input_11; [L97] SORT_1 input_12; [L98] SORT_13 input_14; [L99] SORT_8 input_15; [L100] SORT_8 input_16; [L101] SORT_8 input_17; [L102] SORT_1 input_210; [L103] SORT_97 input_212; [L104] SORT_1 input_232; [L105] SORT_97 input_235; [L107] SORT_8 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_8; [L108] SORT_1 state_23 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L109] SORT_1 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L110] SORT_1 state_30 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L111] SORT_1 state_33 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L112] SORT_1 state_35 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L113] SORT_1 state_39 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L114] SORT_1 state_41 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L115] SORT_1 state_58 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L116] SORT_97 state_99 = __VERIFIER_nondet_uchar() & mask_SORT_97; [L117] SORT_1 state_128 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L119] SORT_8 init_20_arg_1 = var_18; [L120] state_19 = init_20_arg_1 [L121] SORT_1 init_24_arg_1 = var_22; [L122] state_23 = init_24_arg_1 [L123] SORT_1 init_29_arg_1 = var_22; [L124] state_28 = init_29_arg_1 [L125] SORT_1 init_31_arg_1 = var_22; [L126] state_30 = init_31_arg_1 [L127] SORT_1 init_34_arg_1 = var_22; [L128] state_33 = init_34_arg_1 [L129] SORT_1 init_36_arg_1 = var_22; [L130] state_35 = init_36_arg_1 [L131] SORT_1 init_40_arg_1 = var_22; [L132] state_39 = init_40_arg_1 [L133] SORT_1 init_42_arg_1 = var_22; [L134] state_41 = init_42_arg_1 [L135] SORT_1 init_59_arg_1 = var_22; [L136] state_58 = init_59_arg_1 [L137] SORT_97 init_100_arg_1 = var_98; [L138] state_99 = init_100_arg_1 [L139] SORT_1 init_129_arg_1 = var_22; [L140] state_128 = init_129_arg_1 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_216=1, var_218=5, var_22=0, var_245=4095, var_25=2, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L143] input_2 = __VERIFIER_nondet_ushort() [L144] input_3 = __VERIFIER_nondet_ushort() [L145] input_4 = __VERIFIER_nondet_ushort() [L146] input_5 = __VERIFIER_nondet_ushort() [L147] input_6 = __VERIFIER_nondet_ushort() [L148] input_7 = __VERIFIER_nondet_ushort() [L149] input_9 = __VERIFIER_nondet_uchar() [L150] input_10 = __VERIFIER_nondet_uchar() [L151] input_11 = __VERIFIER_nondet_uchar() [L152] input_11 = input_11 & mask_SORT_8 [L153] input_12 = __VERIFIER_nondet_ushort() [L154] input_14 = __VERIFIER_nondet_uchar() [L155] input_14 = input_14 & mask_SORT_13 [L156] input_15 = __VERIFIER_nondet_uchar() [L157] input_16 = __VERIFIER_nondet_uchar() [L158] input_17 = __VERIFIER_nondet_uchar() [L159] input_210 = __VERIFIER_nondet_ushort() [L160] input_212 = __VERIFIER_nondet_uchar() [L161] input_232 = __VERIFIER_nondet_ushort() [L162] input_235 = __VERIFIER_nondet_uchar() [L165] SORT_8 var_21_arg_0 = state_19; [L166] SORT_8 var_21_arg_1 = var_18; [L167] SORT_8 var_21 = var_21_arg_0 == var_21_arg_1; [L168] SORT_1 var_26_arg_0 = state_23; [L169] SORT_1 var_26_arg_1 = var_25; [L170] SORT_8 var_26 = var_26_arg_0 != var_26_arg_1; [L171] SORT_8 var_27_arg_0 = var_21; [L172] SORT_8 var_27_arg_1 = var_26; [L173] SORT_8 var_27 = var_27_arg_0 | var_27_arg_1; [L174] SORT_8 var_44_arg_0 = var_18; [L175] SORT_1 var_44_arg_1 = input_7; [L176] SORT_1 var_44_arg_2 = input_6; [L177] SORT_1 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L178] SORT_8 var_43_arg_0 = var_18; [L179] SORT_1 var_43_arg_1 = state_41; [L180] SORT_1 var_43_arg_2 = state_39; [L181] SORT_1 var_43 = var_43_arg_0 ? var_43_arg_1 : var_43_arg_2; [L182] SORT_8 var_45_arg_0 = var_18; [L183] SORT_1 var_45_arg_1 = var_44; [L184] SORT_1 var_45_arg_2 = var_43; [L185] SORT_1 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L186] SORT_8 var_37_arg_0 = var_18; [L187] SORT_1 var_37_arg_1 = state_35; [L188] SORT_1 var_37_arg_2 = state_33; [L189] SORT_1 var_37 = var_37_arg_0 ? var_37_arg_1 : var_37_arg_2; [L190] SORT_8 var_32_arg_0 = var_18; [L191] SORT_1 var_32_arg_1 = state_30; [L192] SORT_1 var_32_arg_2 = state_28; [L193] SORT_1 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; [L194] SORT_8 var_38_arg_0 = var_18; [L195] SORT_1 var_38_arg_1 = var_37; [L196] SORT_1 var_38_arg_2 = var_32; [L197] SORT_1 var_38 = var_38_arg_0 ? var_38_arg_1 : var_38_arg_2; [L198] SORT_8 var_46_arg_0 = var_18; [L199] SORT_1 var_46_arg_1 = var_45; [L200] SORT_1 var_46_arg_2 = var_38; [L201] SORT_1 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L202] var_46 = var_46 & mask_SORT_1 [L203] SORT_1 var_48_arg_0 = var_46; [L204] SORT_1 var_48_arg_1 = var_47; [L205] SORT_8 var_48 = var_48_arg_0 == var_48_arg_1; [L206] SORT_8 var_49_arg_0 = var_27; [L207] SORT_8 var_49_arg_1 = var_48; [L208] SORT_8 var_49 = var_49_arg_0 | var_49_arg_1; [L209] SORT_8 var_53_arg_0 = var_49; [L210] SORT_8 var_53 = ~var_53_arg_0; [L211] SORT_8 var_54_arg_0 = var_52; [L212] SORT_8 var_54_arg_1 = var_53; [L213] SORT_8 var_54 = var_54_arg_0 & var_54_arg_1; [L214] var_54 = var_54 & mask_SORT_8 [L215] SORT_8 bad_55_arg_0 = var_54; [L216] CALL __VERIFIER_assert(!(bad_55_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:42:11,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 27ade89d9994325493c9462293c9b3d2b8ab96fa12e80a31b520a55487db53c4 --- 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 07:42:14,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:42:14,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:42:14,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:42:14,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:42:14,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:42:14,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:42:14,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:42:14,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:42:14,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:42:14,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:42:14,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:42:14,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:42:14,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:42:14,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:42:14,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:42:14,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:42:14,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:42:14,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:42:14,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:42:14,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:42:14,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:42:14,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:42:14,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:42:14,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:42:14,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:42:14,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:42:14,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:42:14,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:42:14,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:42:14,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:42:14,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:42:14,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:42:14,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:42:14,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:42:14,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:42:14,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:42:14,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:42:14,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:42:14,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:42:14,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:42:14,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:42:14,359 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:42:14,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:42:14,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:42:14,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:42:14,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:42:14,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:42:14,362 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:42:14,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:42:14,363 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:42:14,363 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:42:14,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:42:14,364 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:42:14,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:42:14,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:42:14,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:42:14,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:42:14,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:42:14,367 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:42:14,367 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:42:14,367 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:42:14,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:42:14,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:42:14,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:42:14,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:42:14,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:42:14,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:42:14,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:42:14,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:42:14,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:42:14,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:42:14,370 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:42:14,370 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:42:14,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:42:14,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:42:14,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:42:14,371 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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27ade89d9994325493c9462293c9b3d2b8ab96fa12e80a31b520a55487db53c4 [2022-11-19 07:42:14,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:42:14,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:42:14,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:42:14,788 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:42:14,789 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:42:14,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-19 07:42:14,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data/bd4ea19a8/035a399fd098498885081926d1e19388/FLAG16deea6e6 [2022-11-19 07:42:15,577 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:42:15,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-19 07:42:15,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data/bd4ea19a8/035a399fd098498885081926d1e19388/FLAG16deea6e6 [2022-11-19 07:42:15,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/data/bd4ea19a8/035a399fd098498885081926d1e19388 [2022-11-19 07:42:15,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:42:15,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:42:15,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:42:15,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:42:15,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:42:15,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:15" (1/1) ... [2022-11-19 07:42:15,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eded6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:15, skipping insertion in model container [2022-11-19 07:42:15,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:15" (1/1) ... [2022-11-19 07:42:15,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:42:15,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:42:16,058 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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c[1107,1120] [2022-11-19 07:42:16,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:42:16,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:42:16,559 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_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c[1107,1120] [2022-11-19 07:42:16,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:42:16,746 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:42:16,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16 WrapperNode [2022-11-19 07:42:16,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:42:16,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:42:16,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:42:16,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:42:16,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,900 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1801 [2022-11-19 07:42:16,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:42:16,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:42:16,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:42:16,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:42:16,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,992 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:16,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:17,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:42:17,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:42:17,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:42:17,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:42:17,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (1/1) ... [2022-11-19 07:42:17,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:42:17,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:42:17,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:42:17,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:42:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:42:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:42:17,583 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:42:17,585 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:42:21,082 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:42:21,089 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:42:21,089 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:42:21,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:21 BoogieIcfgContainer [2022-11-19 07:42:21,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:42:21,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:42:21,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:42:21,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:42:21,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:15" (1/3) ... [2022-11-19 07:42:21,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7033805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:21, skipping insertion in model container [2022-11-19 07:42:21,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:16" (2/3) ... [2022-11-19 07:42:21,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7033805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:21, skipping insertion in model container [2022-11-19 07:42:21,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:21" (3/3) ... [2022-11-19 07:42:21,101 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-19 07:42:21,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:42:21,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:42:21,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:42:21,198 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;@530fc1c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:42:21,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:42:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:42:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:42:21,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:21,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:42:21,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:21,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 07:42:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:42:21,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062878073] [2022-11-19 07:42:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:21,236 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 07:42:21,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:42:21,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:21,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:21,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:42:21,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:42:21,886 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 07:42:21,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:42:21,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:42:21,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062878073] [2022-11-19 07:42:21,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062878073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:42:21,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:42:21,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:42:21,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389714494] [2022-11-19 07:42:21,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:42:21,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:42:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:42:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:42:21,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:42:21,928 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:42:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:22,338 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 07:42:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:42:22,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:42:22,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:22,350 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:42:22,350 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:42:22,353 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 07:42:22,357 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:22,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:42:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:42:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 07:42:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:42:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 07:42:22,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 07:42:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:22,393 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 07:42:22,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:42:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 07:42:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:42:22,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:22,394 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:42:22,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:42:22,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:22,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 07:42:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:42:22,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211921484] [2022-11-19 07:42:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:22,613 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 07:42:22,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:42:22,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:22,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:23,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-19 07:42:23,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:42:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:42:24,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:42:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:42:24,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:42:24,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211921484] [2022-11-19 07:42:24,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211921484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:42:24,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [317223090] [2022-11-19 07:42:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:24,747 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:42:24,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:42:24,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:42:24,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:42:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:26,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-19 07:42:26,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:42:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:42:26,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:42:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:42:27,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [317223090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:42:27,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953446320] [2022-11-19 07:42:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:27,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:42:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:42:27,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:42:27,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:42:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:27,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 07:42:27,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:42:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:42:28,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:42:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:42:29,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953446320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:42:29,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:42:29,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 12 [2022-11-19 07:42:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322724996] [2022-11-19 07:42:29,054 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:42:29,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:42:29,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:42:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:42:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:42:29,058 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:42:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:30,277 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:42:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:42:30,287 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:42:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:30,288 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:42:30,288 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:42:30,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:42:30,290 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:30,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 14 Unchecked, 1.1s Time] [2022-11-19 07:42:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:42:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 07:42:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:42:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 07:42:30,295 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 07:42:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:30,295 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 07:42:30,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:42:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 07:42:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:42:30,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:30,296 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:42:30,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 07:42:30,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-19 07:42:30,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:30,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:30,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 07:42:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:42:30,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78266936] [2022-11-19 07:42:30,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:42:30,906 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 07:42:30,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:42:30,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:30,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:42:32,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:42:32,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:42:32,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 3146 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-19 07:42:32,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:42:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:42:38,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:44:38,408 WARN L233 SmtUtils]: Spent 1.94m on a formula simplification. DAG size of input: 671 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:44:38,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:44:38,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78266936] [2022-11-19 07:44:38,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78266936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:44:38,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [163219890] [2022-11-19 07:44:38,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:44:38,858 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:44:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:44:38,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:44:38,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:44:41,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:44:41,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:44:41,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 3146 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-19 07:44:41,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:44:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:44:46,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:19,280 WARN L233 SmtUtils]: Spent 1.44m on a formula simplification. DAG size of input: 654 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:46:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:46:19,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [163219890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:19,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13223393] [2022-11-19 07:46:19,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:46:19,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:19,521 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:46:19,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:46:20,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:46:20,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:46:20,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 3146 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-19 07:46:20,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:46:21,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:47:37,166 WARN L233 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 661 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:37,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13223393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:47:37,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:47:37,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2022-11-19 07:47:37,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433111650] [2022-11-19 07:47:37,363 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:47:37,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 07:47:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:47:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 07:47:37,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=112, Unknown=7, NotChecked=0, Total=156 [2022-11-19 07:47:37,365 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:44,067 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-19 07:47:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:47:44,067 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:47:44,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:44,068 INFO L225 Difference]: With dead ends: 19 [2022-11-19 07:47:44,068 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 07:47:44,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 300.7s TimeCoverageRelationStatistics Valid=62, Invalid=171, Unknown=7, NotChecked=0, Total=240 [2022-11-19 07:47:44,070 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:44,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 43 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-11-19 07:47:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 07:47:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-19 07:47:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 07:47:44,076 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-19 07:47:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:44,076 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 07:47:44,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 07:47:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:47:44,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:44,078 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-19 07:47:44,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:44,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:44,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:47:44,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:47:44,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:47:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-19 07:47:44,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:47:44,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058728276] [2022-11-19 07:47:44,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:47:44,712 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 07:47:44,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:47:44,713 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:47:44,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb03e568-b382-49f9-b3b2-b3ab5ac43fb8/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 07:47:46,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:47:46,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:47:46,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 4646 conjuncts, 308 conjunts are in the unsatisfiable core [2022-11-19 07:47:46,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:47:51,050 INFO L328 TraceCheckSpWp]: Computing backward predicates...