./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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 c9d0ae79d7b0c917388b18c5d68e52593a1af2acf769d209e2f25d05a5da4b62 --- 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 08:00:35,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:00:35,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:00:35,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:00:35,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:00:35,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:00:35,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:00:35,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:00:35,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:00:35,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:00:35,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:00:35,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:00:35,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:00:35,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:00:35,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:00:35,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:00:35,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:00:35,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:00:35,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:00:35,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:00:35,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:00:35,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:00:35,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:00:35,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:00:35,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:00:35,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:00:35,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:00:35,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:00:35,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:00:35,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:00:35,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:00:35,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:00:35,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:00:35,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:00:35,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:00:35,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:00:35,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:00:35,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:00:35,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:00:35,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:00:35,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:00:35,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:00:35,588 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:00:35,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:00:35,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:00:35,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:00:35,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:00:35,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:00:35,594 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:00:35,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:00:35,594 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:00:35,594 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:00:35,596 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:00:35,596 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:00:35,596 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:00:35,596 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:00:35,597 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:00:35,597 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:00:35,597 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:00:35,597 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:00:35,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:00:35,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:00:35,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:00:35,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:00:35,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:00:35,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:00:35,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:00:35,600 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:00:35,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:00:35,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:00:35,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:00:35,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:00:35,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:00:35,603 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:00:35,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:00:35,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:00:35,604 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:00:35,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:00:35,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:00:35,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:00:35,605 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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9d0ae79d7b0c917388b18c5d68e52593a1af2acf769d209e2f25d05a5da4b62 [2022-11-19 08:00:36,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:00:36,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:00:36,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:00:36,046 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:00:36,047 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:00:36,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c [2022-11-19 08:00:36,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data/4045bd443/63a0cd93e270433c9b10e2fae7766378/FLAGfcd15afdc [2022-11-19 08:00:36,967 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:00:36,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c [2022-11-19 08:00:36,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data/4045bd443/63a0cd93e270433c9b10e2fae7766378/FLAGfcd15afdc [2022-11-19 08:00:37,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data/4045bd443/63a0cd93e270433c9b10e2fae7766378 [2022-11-19 08:00:37,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:00:37,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:00:37,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:00:37,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:00:37,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:00:37,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:37" (1/1) ... [2022-11-19 08:00:37,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f944d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:37, skipping insertion in model container [2022-11-19 08:00:37,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:37" (1/1) ... [2022-11-19 08:00:37,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:00:37,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:00:37,552 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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c[1014,1027] [2022-11-19 08:00:38,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:00:38,056 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:00:38,068 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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c[1014,1027] [2022-11-19 08:00:38,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:00:38,357 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:00:38,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38 WrapperNode [2022-11-19 08:00:38,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:00:38,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:00:38,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:00:38,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:00:38,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,677 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4025 [2022-11-19 08:00:38,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:00:38,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:00:38,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:00:38,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:00:38,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:00:38,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:00:38,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:00:38,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:00:38,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (1/1) ... [2022-11-19 08:00:38,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:00:38,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:38,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:00:39,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:00:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:00:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:00:39,710 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:00:39,712 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:00:47,937 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:01:11,550 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:01:11,550 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:01:11,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:11 BoogieIcfgContainer [2022-11-19 08:01:11,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:01:11,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:01:11,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:01:11,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:01:11,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:37" (1/3) ... [2022-11-19 08:01:11,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa08fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:11, skipping insertion in model container [2022-11-19 08:01:11,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:38" (2/3) ... [2022-11-19 08:01:11,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa08fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:11, skipping insertion in model container [2022-11-19 08:01:11,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:11" (3/3) ... [2022-11-19 08:01:11,565 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lann.2.prop1-func-interl.c [2022-11-19 08:01:11,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:01:11,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:01:11,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:01:11,659 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;@5c51f19a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:01:11,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:01:11,664 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 08:01:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:01:11,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:11,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:01:11,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:11,685 INFO L85 PathProgramCache]: Analyzing trace with hash 94156494, now seen corresponding path program 1 times [2022-11-19 08:01:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:11,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341216912] [2022-11-19 08:01:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:01:12,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:01:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:01:12,558 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:01:12,560 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:01:12,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:01:12,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:01:12,568 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:01:12,572 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:01:12,604 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 08:01:12,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:01:12 BoogieIcfgContainer [2022-11-19 08:01:12,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:01:12,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:01:12,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:01:12,635 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:01:12,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:11" (3/4) ... [2022-11-19 08:01:12,640 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 08:01:12,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:01:12,642 INFO L158 Benchmark]: Toolchain (without parser) took 35527.48ms. Allocated memory was 115.3MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 74.7MB in the beginning and 6.4GB in the end (delta: -6.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-19 08:01:12,643 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 115.3MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:01:12,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1240.94ms. Allocated memory is still 115.3MB. Free memory was 74.6MB in the beginning and 59.3MB in the end (delta: 15.3MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2022-11-19 08:01:12,646 INFO L158 Benchmark]: Boogie Procedure Inliner took 318.04ms. Allocated memory was 115.3MB in the beginning and 165.7MB in the end (delta: 50.3MB). Free memory was 59.3MB in the beginning and 99.2MB in the end (delta: -39.9MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2022-11-19 08:01:12,652 INFO L158 Benchmark]: Boogie Preprocessor took 258.49ms. Allocated memory is still 165.7MB. Free memory was 99.2MB in the beginning and 80.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-19 08:01:12,653 INFO L158 Benchmark]: RCFGBuilder took 32615.04ms. Allocated memory was 165.7MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 80.9MB in the beginning and 6.4GB in the end (delta: -6.4GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2022-11-19 08:01:12,655 INFO L158 Benchmark]: TraceAbstraction took 1076.89ms. Allocated memory is still 7.5GB. Free memory was 6.4GB in the beginning and 6.4GB in the end (delta: 81.8MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2022-11-19 08:01:12,656 INFO L158 Benchmark]: Witness Printer took 7.26ms. Allocated memory is still 7.5GB. Free memory is still 6.4GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:01:12,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 115.3MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1240.94ms. Allocated memory is still 115.3MB. Free memory was 74.6MB in the beginning and 59.3MB in the end (delta: 15.3MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 318.04ms. Allocated memory was 115.3MB in the beginning and 165.7MB in the end (delta: 50.3MB). Free memory was 59.3MB in the beginning and 99.2MB in the end (delta: -39.9MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 258.49ms. Allocated memory is still 165.7MB. Free memory was 99.2MB in the beginning and 80.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * RCFGBuilder took 32615.04ms. Allocated memory was 165.7MB in the beginning and 7.5GB in the end (delta: 7.4GB). Free memory was 80.9MB in the beginning and 6.4GB in the end (delta: -6.4GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * TraceAbstraction took 1076.89ms. Allocated memory is still 7.5GB. Free memory was 6.4GB in the beginning and 6.4GB in the end (delta: 81.8MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. * Witness Printer took 7.26ms. Allocated memory is still 7.5GB. Free memory is still 6.4GB. There was no memory consumed. 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 bitwiseComplement at line 270, overapproximation of bitwiseAnd at line 205. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_38 = 0; [L39] const SORT_4 var_81 = 1; [L40] const SORT_4 var_82 = 0; [L41] const SORT_2 var_94 = 2; [L42] const SORT_2 var_96 = 1; [L43] const SORT_2 var_98 = 0; [L44] const SORT_2 var_165 = 255; [L45] const SORT_2 var_172 = 24; [L46] const SORT_2 var_179 = 14; [L47] const SORT_2 var_186 = 6; [L48] const SORT_3 var_327 = 0; [L49] const SORT_4 var_329 = 24; [L50] const SORT_4 var_351 = 14; [L51] const SORT_4 var_373 = 6; [L53] SORT_1 input_93; [L54] SORT_1 input_95; [L55] SORT_1 input_97; [L56] SORT_1 input_99; [L57] SORT_1 input_105; [L58] SORT_1 input_108; [L59] SORT_1 input_113; [L60] SORT_1 input_114; [L61] SORT_1 input_115; [L62] SORT_1 input_116; [L63] SORT_1 input_122; [L64] SORT_1 input_125; [L65] SORT_1 input_130; [L66] SORT_1 input_131; [L67] SORT_1 input_132; [L68] SORT_1 input_133; [L69] SORT_1 input_139; [L70] SORT_1 input_142; [L71] SORT_1 input_147; [L72] SORT_1 input_148; [L73] SORT_1 input_149; [L74] SORT_1 input_150; [L75] SORT_1 input_156; [L76] SORT_1 input_159; [L77] SORT_1 input_164; [L78] SORT_1 input_171; [L79] SORT_1 input_178; [L80] SORT_1 input_185; [L81] SORT_1 input_192; [L82] SORT_1 input_200; [L83] SORT_1 input_213; [L84] SORT_1 input_221; [L85] SORT_1 input_234; [L86] SORT_1 input_242; [L87] SORT_1 input_255; [L88] SORT_1 input_263; [L90] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L91] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L92] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L97] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L98] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L99] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L100] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L101] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L102] SORT_2 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L103] SORT_2 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L104] SORT_2 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L105] SORT_2 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L106] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L124] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L126] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L128] SORT_2 init_7_arg_1 = var_5; [L129] state_6 = init_7_arg_1 [L130] SORT_2 init_9_arg_1 = var_5; [L131] state_8 = init_9_arg_1 [L132] SORT_2 init_11_arg_1 = var_5; [L133] state_10 = init_11_arg_1 [L134] SORT_2 init_13_arg_1 = var_5; [L135] state_12 = init_13_arg_1 [L136] SORT_2 init_15_arg_1 = var_5; [L137] state_14 = init_15_arg_1 [L138] SORT_2 init_17_arg_1 = var_5; [L139] state_16 = init_17_arg_1 [L140] SORT_2 init_19_arg_1 = var_5; [L141] state_18 = init_19_arg_1 [L142] SORT_2 init_21_arg_1 = var_5; [L143] state_20 = init_21_arg_1 [L144] SORT_2 init_23_arg_1 = var_5; [L145] state_22 = init_23_arg_1 [L146] SORT_2 init_25_arg_1 = var_5; [L147] state_24 = init_25_arg_1 [L148] SORT_2 init_27_arg_1 = var_5; [L149] state_26 = init_27_arg_1 [L150] SORT_2 init_29_arg_1 = var_5; [L151] state_28 = init_29_arg_1 [L152] SORT_2 init_31_arg_1 = var_5; [L153] state_30 = init_31_arg_1 [L154] SORT_2 init_33_arg_1 = var_5; [L155] state_32 = init_33_arg_1 [L156] SORT_2 init_35_arg_1 = var_5; [L157] state_34 = init_35_arg_1 [L158] SORT_2 init_37_arg_1 = var_5; [L159] state_36 = init_37_arg_1 [L160] SORT_1 init_40_arg_1 = var_38; [L161] state_39 = init_40_arg_1 [L162] SORT_1 init_42_arg_1 = var_38; [L163] state_41 = init_42_arg_1 [L164] SORT_1 init_44_arg_1 = var_38; [L165] state_43 = init_44_arg_1 [L166] SORT_1 init_46_arg_1 = var_38; [L167] state_45 = init_46_arg_1 [L168] SORT_1 init_48_arg_1 = var_38; [L169] state_47 = init_48_arg_1 [L170] SORT_1 init_50_arg_1 = var_38; [L171] state_49 = init_50_arg_1 [L172] SORT_1 init_52_arg_1 = var_38; [L173] state_51 = init_52_arg_1 [L174] SORT_1 init_54_arg_1 = var_38; [L175] state_53 = init_54_arg_1 [L176] SORT_1 init_56_arg_1 = var_38; [L177] state_55 = init_56_arg_1 [L178] SORT_1 init_58_arg_1 = var_38; [L179] state_57 = init_58_arg_1 [L180] SORT_1 init_60_arg_1 = var_38; [L181] state_59 = init_60_arg_1 [L182] SORT_1 init_62_arg_1 = var_38; [L183] state_61 = init_62_arg_1 [L184] SORT_1 init_64_arg_1 = var_38; [L185] state_63 = init_64_arg_1 [L186] SORT_1 init_66_arg_1 = var_38; [L187] state_65 = init_66_arg_1 [L188] SORT_1 init_68_arg_1 = var_38; [L189] state_67 = init_68_arg_1 [L190] SORT_1 init_70_arg_1 = var_38; [L191] state_69 = init_70_arg_1 [L192] SORT_1 init_72_arg_1 = var_38; [L193] state_71 = init_72_arg_1 [L194] SORT_1 init_74_arg_1 = var_38; [L195] state_73 = init_74_arg_1 [L196] SORT_1 init_76_arg_1 = var_38; [L197] state_75 = init_76_arg_1 [L198] SORT_1 init_78_arg_1 = var_38; [L199] state_77 = init_78_arg_1 [L200] SORT_1 init_80_arg_1 = var_38; [L201] state_79 = init_80_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_165=255, var_172=24, var_179=14, var_186=6, var_327=0, var_329=24, var_351=14, var_373=6, var_38=0, var_5=0, var_81=1, var_82=0, var_94=2, var_96=1, var_98=0] [L204] input_93 = __VERIFIER_nondet_uchar() [L205] input_93 = input_93 & mask_SORT_1 [L206] input_95 = __VERIFIER_nondet_uchar() [L207] input_95 = input_95 & mask_SORT_1 [L208] input_97 = __VERIFIER_nondet_uchar() [L209] input_97 = input_97 & mask_SORT_1 [L210] input_99 = __VERIFIER_nondet_uchar() [L211] input_99 = input_99 & mask_SORT_1 [L212] input_105 = __VERIFIER_nondet_uchar() [L213] input_105 = input_105 & mask_SORT_1 [L214] input_108 = __VERIFIER_nondet_uchar() [L215] input_108 = input_108 & mask_SORT_1 [L216] input_113 = __VERIFIER_nondet_uchar() [L217] input_113 = input_113 & mask_SORT_1 [L218] input_114 = __VERIFIER_nondet_uchar() [L219] input_114 = input_114 & mask_SORT_1 [L220] input_115 = __VERIFIER_nondet_uchar() [L221] input_115 = input_115 & mask_SORT_1 [L222] input_116 = __VERIFIER_nondet_uchar() [L223] input_116 = input_116 & mask_SORT_1 [L224] input_122 = __VERIFIER_nondet_uchar() [L225] input_122 = input_122 & mask_SORT_1 [L226] input_125 = __VERIFIER_nondet_uchar() [L227] input_125 = input_125 & mask_SORT_1 [L228] input_130 = __VERIFIER_nondet_uchar() [L229] input_130 = input_130 & mask_SORT_1 [L230] input_131 = __VERIFIER_nondet_uchar() [L231] input_131 = input_131 & mask_SORT_1 [L232] input_132 = __VERIFIER_nondet_uchar() [L233] input_132 = input_132 & mask_SORT_1 [L234] input_133 = __VERIFIER_nondet_uchar() [L235] input_133 = input_133 & mask_SORT_1 [L236] input_139 = __VERIFIER_nondet_uchar() [L237] input_139 = input_139 & mask_SORT_1 [L238] input_142 = __VERIFIER_nondet_uchar() [L239] input_142 = input_142 & mask_SORT_1 [L240] input_147 = __VERIFIER_nondet_uchar() [L241] input_147 = input_147 & mask_SORT_1 [L242] input_148 = __VERIFIER_nondet_uchar() [L243] input_148 = input_148 & mask_SORT_1 [L244] input_149 = __VERIFIER_nondet_uchar() [L245] input_149 = input_149 & mask_SORT_1 [L246] input_150 = __VERIFIER_nondet_uchar() [L247] input_150 = input_150 & mask_SORT_1 [L248] input_156 = __VERIFIER_nondet_uchar() [L249] input_156 = input_156 & mask_SORT_1 [L250] input_159 = __VERIFIER_nondet_uchar() [L251] input_159 = input_159 & mask_SORT_1 [L252] input_164 = __VERIFIER_nondet_uchar() [L253] input_164 = input_164 & mask_SORT_1 [L254] input_171 = __VERIFIER_nondet_uchar() [L255] input_171 = input_171 & mask_SORT_1 [L256] input_178 = __VERIFIER_nondet_uchar() [L257] input_178 = input_178 & mask_SORT_1 [L258] input_185 = __VERIFIER_nondet_uchar() [L259] input_185 = input_185 & mask_SORT_1 [L260] input_192 = __VERIFIER_nondet_uchar() [L261] input_200 = __VERIFIER_nondet_uchar() [L262] input_213 = __VERIFIER_nondet_uchar() [L263] input_221 = __VERIFIER_nondet_uchar() [L264] input_234 = __VERIFIER_nondet_uchar() [L265] input_242 = __VERIFIER_nondet_uchar() [L266] input_255 = __VERIFIER_nondet_uchar() [L267] input_263 = __VERIFIER_nondet_uchar() [L270] SORT_1 var_83_arg_0 = ~state_41; [L271] var_83_arg_0 = var_83_arg_0 & mask_SORT_1 [L272] SORT_4 var_83_arg_1 = var_81; [L273] SORT_4 var_83_arg_2 = var_82; [L274] SORT_4 var_83 = var_83_arg_0 ? var_83_arg_1 : var_83_arg_2; [L275] SORT_1 var_84_arg_0 = state_47; [L276] SORT_4 var_84_arg_1 = var_81; [L277] SORT_4 var_84_arg_2 = var_82; [L278] SORT_4 var_84 = var_84_arg_0 ? var_84_arg_1 : var_84_arg_2; [L279] SORT_4 var_85_arg_0 = var_83; [L280] SORT_4 var_85_arg_1 = var_84; [L281] SORT_4 var_85 = var_85_arg_0 + var_85_arg_1; [L282] SORT_1 var_86_arg_0 = state_53; [L283] SORT_4 var_86_arg_1 = var_81; [L284] SORT_4 var_86_arg_2 = var_82; [L285] SORT_4 var_86 = var_86_arg_0 ? var_86_arg_1 : var_86_arg_2; [L286] SORT_4 var_87_arg_0 = var_85; [L287] SORT_4 var_87_arg_1 = var_86; [L288] SORT_4 var_87 = var_87_arg_0 + var_87_arg_1; [L289] SORT_1 var_88_arg_0 = state_59; [L290] SORT_4 var_88_arg_1 = var_81; [L291] SORT_4 var_88_arg_2 = var_82; [L292] SORT_4 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L293] SORT_4 var_89_arg_0 = var_87; [L294] SORT_4 var_89_arg_1 = var_88; [L295] SORT_4 var_89 = var_89_arg_0 + var_89_arg_1; [L296] var_89 = var_89 & mask_SORT_4 [L297] SORT_4 var_90_arg_0 = var_89; [L298] SORT_4 var_90_arg_1 = var_81; [L299] SORT_1 var_90 = var_90_arg_0 <= var_90_arg_1; [L300] SORT_1 var_91_arg_0 = ~state_79; [L301] var_91_arg_0 = var_91_arg_0 & mask_SORT_1 [L302] SORT_1 var_91_arg_1 = ~var_90; [L303] var_91_arg_1 = var_91_arg_1 & mask_SORT_1 [L304] SORT_1 var_91 = var_91_arg_0 & var_91_arg_1; [L305] var_91 = var_91 & mask_SORT_1 [L306] SORT_1 bad_92_arg_0 = var_91; [L307] CALL __VERIFIER_assert(!(bad_92_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: 0.9s, 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, 0.4s 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 08:01:12,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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 c9d0ae79d7b0c917388b18c5d68e52593a1af2acf769d209e2f25d05a5da4b62 --- 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 08:01:15,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:01:15,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:01:15,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:01:15,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:01:15,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:01:15,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:01:15,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:01:15,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:01:15,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:01:15,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:01:15,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:01:15,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:01:15,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:01:15,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:01:15,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:01:15,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:01:15,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:01:15,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:01:15,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:01:15,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:01:15,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:01:15,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:01:15,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:01:15,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:01:15,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:01:15,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:01:15,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:01:15,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:01:15,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:01:15,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:01:15,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:01:15,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:01:15,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:01:15,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:01:15,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:01:15,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:01:15,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:01:15,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:01:15,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:01:15,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:01:15,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 08:01:15,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:01:15,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:01:15,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:01:15,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:01:15,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:01:15,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:01:15,748 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:01:15,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:01:15,749 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:01:15,749 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:01:15,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:01:15,750 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:01:15,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:01:15,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:01:15,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:01:15,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:01:15,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:01:15,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:01:15,753 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:01:15,753 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:01:15,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:01:15,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:01:15,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:01:15,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:01:15,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:01:15,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:01:15,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:01:15,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:01:15,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:01:15,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:01:15,761 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:01:15,762 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:01:15,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:01:15,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:01:15,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:01:15,763 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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9d0ae79d7b0c917388b18c5d68e52593a1af2acf769d209e2f25d05a5da4b62 [2022-11-19 08:01:16,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:01:16,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:01:16,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:01:16,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:01:16,199 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:01:16,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c [2022-11-19 08:01:16,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data/ade4aa531/116368018eb444b8861a19d80a594b0f/FLAG6a75f8bca [2022-11-19 08:01:17,200 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:01:17,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c [2022-11-19 08:01:17,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data/ade4aa531/116368018eb444b8861a19d80a594b0f/FLAG6a75f8bca [2022-11-19 08:01:17,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/data/ade4aa531/116368018eb444b8861a19d80a594b0f [2022-11-19 08:01:17,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:01:17,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:01:17,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:01:17,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:01:17,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:01:17,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:17" (1/1) ... [2022-11-19 08:01:17,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d2ae10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:17, skipping insertion in model container [2022-11-19 08:01:17,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:17" (1/1) ... [2022-11-19 08:01:17,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:01:17,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:01:17,680 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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c[1014,1027] [2022-11-19 08:01:18,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:01:18,327 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:01:18,343 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_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.2.prop1-func-interl.c[1014,1027] [2022-11-19 08:01:18,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:01:18,515 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:01:18,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18 WrapperNode [2022-11-19 08:01:18,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:01:18,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:01:18,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:01:18,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:01:18,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,738 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2296 [2022-11-19 08:01:18,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:01:18,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:01:18,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:01:18,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:01:18,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,895 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:01:18,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:01:18,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:01:18,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:01:18,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (1/1) ... [2022-11-19 08:01:18,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:01:18,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:01:18,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:01:19,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:01:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:01:19,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:01:19,706 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:01:19,709 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:01:24,580 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:01:24,600 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:01:24,601 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:01:24,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:24 BoogieIcfgContainer [2022-11-19 08:01:24,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:01:24,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:01:24,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:01:24,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:01:24,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:17" (1/3) ... [2022-11-19 08:01:24,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12da1952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:24, skipping insertion in model container [2022-11-19 08:01:24,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:18" (2/3) ... [2022-11-19 08:01:24,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12da1952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:24, skipping insertion in model container [2022-11-19 08:01:24,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:24" (3/3) ... [2022-11-19 08:01:24,615 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lann.2.prop1-func-interl.c [2022-11-19 08:01:24,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:01:24,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:01:24,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:01:24,744 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;@24d34c40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:01:24,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:01:24,761 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 08:01:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:01:24,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:24,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:01:24,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 08:01:24,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:24,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875267229] [2022-11-19 08:01:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:24,800 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 08:01:24,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:24,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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 08:01:24,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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 08:01:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:25,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-19 08:01:25,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:25,981 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 08:01:25,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:25,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:25,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875267229] [2022-11-19 08:01:25,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875267229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:25,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:25,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:01:25,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008221784] [2022-11-19 08:01:25,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:25,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:01:25,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:01:26,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:01:26,034 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 08:01:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:26,430 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 08:01:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:01:26,433 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 08:01:26,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:26,446 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:01:26,446 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 08:01:26,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:26,452 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:26,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:01:26,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 08:01:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 08:01:26,489 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 08:01:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 08:01:26,491 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 08:01:26,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:26,492 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 08:01:26,492 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 08:01:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 08:01:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:01:26,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:26,493 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:26,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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 08:01:26,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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 08:01:26,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 08:01:26,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:26,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461139244] [2022-11-19 08:01:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:26,715 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 08:01:26,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:26,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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 08:01:26,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/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 08:01:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:27,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-19 08:01:27,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:31,344 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 08:01:31,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:01:59,123 WARN L233 SmtUtils]: Spent 26.94s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:03:28,627 WARN L233 SmtUtils]: Spent 1.35m on a formula simplification that was a NOOP. DAG size: 471 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:03:31,813 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 08:03:31,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:03:31,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461139244] [2022-11-19 08:03:31,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461139244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:03:31,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1929669272] [2022-11-19 08:03:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:31,815 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:03:31,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:03:31,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:03:31,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 08:03:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:33,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-19 08:03:33,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:03:37,700 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 08:03:37,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:07:56,275 WARN L233 SmtUtils]: Spent 4.22m on a formula simplification. DAG size of input: 191 DAG size of output: 137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:11:08,082 WARN L233 SmtUtils]: Spent 2.81m on a formula simplification that was a NOOP. DAG size: 515 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:11:13,866 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 08:11:13,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1929669272] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:11:13,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445830221] [2022-11-19 08:11:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:13,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:11:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:11:13,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:11:13,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_367a22c3-35ee-42e4-8eaf-0ba6d3488d3b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:11:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:14,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 195 conjunts are in the unsatisfiable core [2022-11-19 08:11:14,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:11:17,660 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 08:11:17,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:16,707 WARN L233 SmtUtils]: Spent 50.47s on a formula simplification. DAG size of input: 105 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:14:13,317 WARN L233 SmtUtils]: Spent 1.55m on a formula simplification that was a NOOP. DAG size: 466 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)