./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh --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 32bit --witnessprinter.graph.data.programhash f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- 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-2329fc7 [2022-12-14 13:44:24,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:44:24,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:44:24,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:44:24,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:44:24,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:44:24,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:44:24,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:44:24,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:44:24,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:44:24,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:44:24,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:44:24,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:44:24,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:44:24,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:44:24,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:44:24,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:44:24,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:44:24,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:44:24,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:44:24,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:44:24,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:44:24,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:44:24,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:44:24,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:44:24,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:44:24,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:44:24,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:44:24,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:44:24,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:44:24,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:44:24,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:44:24,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:44:24,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:44:24,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:44:24,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:44:24,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:44:24,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:44:24,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:44:24,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:44:24,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:44:24,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:44:24,560 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:44:24,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:44:24,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:44:24,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:44:24,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:44:24,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:44:24,561 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:44:24,562 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:44:24,562 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:44:24,562 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:44:24,566 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:44:24,567 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:44:24,567 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:44:24,567 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:44:24,567 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:44:24,567 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:44:24,568 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:44:24,568 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:44:24,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:44:24,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:44:24,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:44:24,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:44:24,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:44:24,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:44:24,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:44:24,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:44:24,570 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:44:24,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:44:24,570 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:44:24,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:44:24,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:44:24,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:44:24,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:44:24,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:44:24,571 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:44:24,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:44:24,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:44:24,572 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:44:24,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:44:24,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:44:24,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:44:24,572 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_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2022-12-14 13:44:24,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:44:24,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:44:24,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:44:24,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:44:24,787 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:44:24,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-12-14 13:44:27,403 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:44:27,563 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:44:27,563 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-12-14 13:44:27,568 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/data/3569cc979/e29e385c85d44441bf5470830a33ef9f/FLAGebae8db55 [2022-12-14 13:44:27,579 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/data/3569cc979/e29e385c85d44441bf5470830a33ef9f [2022-12-14 13:44:27,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:44:27,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:44:27,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:44:27,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:44:27,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:44:27,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b3d684a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27, skipping insertion in model container [2022-12-14 13:44:27,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:44:27,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:44:27,726 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-12-14 13:44:27,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:44:27,766 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:44:27,774 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-12-14 13:44:27,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:44:27,803 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:44:27,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27 WrapperNode [2022-12-14 13:44:27,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:44:27,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:44:27,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:44:27,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:44:27,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,834 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 166 [2022-12-14 13:44:27,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:44:27,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:44:27,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:44:27,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:44:27,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:44:27,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:44:27,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:44:27,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:44:27,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (1/1) ... [2022-12-14 13:44:27,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:44:27,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:27,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:44:27,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:44:27,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:44:27,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:44:27,918 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 13:44:27,919 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 13:44:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:44:27,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:44:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 13:44:27,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 13:44:27,976 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:44:27,978 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:44:28,234 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:44:28,396 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:44:28,396 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 13:44:28,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:28 BoogieIcfgContainer [2022-12-14 13:44:28,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:44:28,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:44:28,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:44:28,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:44:28,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:44:27" (1/3) ... [2022-12-14 13:44:28,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dcca01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:44:28, skipping insertion in model container [2022-12-14 13:44:28,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:27" (2/3) ... [2022-12-14 13:44:28,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dcca01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:44:28, skipping insertion in model container [2022-12-14 13:44:28,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:28" (3/3) ... [2022-12-14 13:44:28,405 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2022-12-14 13:44:28,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:44:28,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:44:28,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:44:28,462 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;@5c5d757e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:44:28,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:44:28,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 32 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 13:44:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 13:44:28,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:28,473 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:28,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:44:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2046056103, now seen corresponding path program 1 times [2022-12-14 13:44:28,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:28,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355551033] [2022-12-14 13:44:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:28,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:28,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:28,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355551033] [2022-12-14 13:44:28,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355551033] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:28,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225292864] [2022-12-14 13:44:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:28,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:28,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:28,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:28,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:44:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:28,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 13:44:28,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:29,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 13:44:29,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225292864] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:44:29,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1563098415] [2022-12-14 13:44:29,320 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-12-14 13:44:29,320 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:44:29,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:44:29,330 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:44:29,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:44:29,448 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-12-14 13:44:29,476 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:44:30,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1563098415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:30,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:44:30,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 12, 11] total 29 [2022-12-14 13:44:30,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65685113] [2022-12-14 13:44:30,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:30,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 13:44:30,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:30,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 13:44:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-12-14 13:44:30,248 INFO L87 Difference]: Start difference. First operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 32 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 13:44:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:30,504 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2022-12-14 13:44:30,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 13:44:30,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-12-14 13:44:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:30,514 INFO L225 Difference]: With dead ends: 108 [2022-12-14 13:44:30,514 INFO L226 Difference]: Without dead ends: 65 [2022-12-14 13:44:30,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-12-14 13:44:30,520 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 57 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:30,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 202 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:44:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-14 13:44:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2022-12-14 13:44:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 13:44:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2022-12-14 13:44:30,565 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2022-12-14 13:44:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:30,566 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2022-12-14 13:44:30,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 13:44:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2022-12-14 13:44:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 13:44:30,568 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:30,568 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:30,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:44:30,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 13:44:30,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:44:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash -261208295, now seen corresponding path program 1 times [2022-12-14 13:44:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:30,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177438056] [2022-12-14 13:44:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:30,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:30,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177438056] [2022-12-14 13:44:30,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177438056] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:30,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159511133] [2022-12-14 13:44:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:30,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:30,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:30,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:44:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:31,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 13:44:31,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:31,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 13:44:31,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159511133] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:44:31,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2085977650] [2022-12-14 13:44:31,495 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 13:44:31,495 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:44:31,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:44:31,496 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:44:31,496 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:44:31,888 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-12-14 13:44:31,898 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-12-14 13:44:31,981 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:44:33,520 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '709#(and (= (select |#length| 3) 12) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:44:33,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:44:33,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:44:33,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 12] total 25 [2022-12-14 13:44:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821348715] [2022-12-14 13:44:33,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:44:33,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 13:44:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 13:44:33,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 13:44:33,523 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-14 13:44:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:34,238 INFO L93 Difference]: Finished difference Result 164 states and 256 transitions. [2022-12-14 13:44:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 13:44:34,238 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 37 [2022-12-14 13:44:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:34,241 INFO L225 Difference]: With dead ends: 164 [2022-12-14 13:44:34,241 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 13:44:34,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=349, Invalid=3073, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 13:44:34,244 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 191 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:34,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 412 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:44:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 13:44:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 70. [2022-12-14 13:44:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 states have internal predecessors, (76), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-14 13:44:34,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2022-12-14 13:44:34,270 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 37 [2022-12-14 13:44:34,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:34,271 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2022-12-14 13:44:34,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-14 13:44:34,271 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2022-12-14 13:44:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 13:44:34,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:34,272 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:34,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:44:34,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:34,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:44:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1575529276, now seen corresponding path program 1 times [2022-12-14 13:44:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:34,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078067423] [2022-12-14 13:44:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:34,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:34,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:34,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078067423] [2022-12-14 13:44:34,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078067423] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:34,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287121722] [2022-12-14 13:44:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:34,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:34,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:34,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:34,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:44:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:34,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 13:44:34,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 13:44:34,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:34,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287121722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:44:34,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077085825] [2022-12-14 13:44:34,728 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 13:44:34,728 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:44:34,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:44:34,728 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:44:34,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:44:35,081 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-12-14 13:44:35,125 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:44:35,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1077085825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:35,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:44:35,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 5, 5] total 27 [2022-12-14 13:44:35,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912724507] [2022-12-14 13:44:35,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:35,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 13:44:35,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:35,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 13:44:35,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-12-14 13:44:35,821 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:44:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:36,473 INFO L93 Difference]: Finished difference Result 139 states and 206 transitions. [2022-12-14 13:44:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 13:44:36,474 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2022-12-14 13:44:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:36,475 INFO L225 Difference]: With dead ends: 139 [2022-12-14 13:44:36,475 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 13:44:36,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 13:44:36,476 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 154 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:36,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 232 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 13:44:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 13:44:36,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 78. [2022-12-14 13:44:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 63 states have internal predecessors, (80), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-12-14 13:44:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 107 transitions. [2022-12-14 13:44:36,507 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 107 transitions. Word has length 39 [2022-12-14 13:44:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:36,507 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 107 transitions. [2022-12-14 13:44:36,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:44:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 107 transitions. [2022-12-14 13:44:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 13:44:36,509 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:36,509 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:36,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:44:36,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:36,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:44:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1949605824, now seen corresponding path program 1 times [2022-12-14 13:44:36,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:36,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302813773] [2022-12-14 13:44:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:36,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:36,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:36,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302813773] [2022-12-14 13:44:36,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302813773] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:36,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797440936] [2022-12-14 13:44:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:36,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:36,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:36,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:36,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:44:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:36,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 13:44:36,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 13:44:36,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 13:44:37,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797440936] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:37,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:44:37,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 8] total 16 [2022-12-14 13:44:37,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942974295] [2022-12-14 13:44:37,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:37,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:44:37,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:44:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-14 13:44:37,048 INFO L87 Difference]: Start difference. First operand 78 states and 107 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 13:44:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:37,142 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-12-14 13:44:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:44:37,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-12-14 13:44:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:37,143 INFO L225 Difference]: With dead ends: 100 [2022-12-14 13:44:37,143 INFO L226 Difference]: Without dead ends: 83 [2022-12-14 13:44:37,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-12-14 13:44:37,144 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:37,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 197 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:44:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-14 13:44:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2022-12-14 13:44:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 states have internal predecessors, (79), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 13:44:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2022-12-14 13:44:37,160 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 41 [2022-12-14 13:44:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:37,160 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2022-12-14 13:44:37,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 13:44:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2022-12-14 13:44:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 13:44:37,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:37,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:37,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:44:37,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:37,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:44:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash -919225684, now seen corresponding path program 1 times [2022-12-14 13:44:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:37,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648163720] [2022-12-14 13:44:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:37,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:37,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648163720] [2022-12-14 13:44:37,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648163720] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945377916] [2022-12-14 13:44:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:37,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:37,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:37,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:44:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:37,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 13:44:37,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 13:44:37,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:44:37,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945377916] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:44:37,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1752366925] [2022-12-14 13:44:37,695 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-12-14 13:44:37,695 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:44:37,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:44:37,695 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:44:37,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:45:22,176 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-12-14 13:45:22,213 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-12-14 13:45:22,295 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:45:30,199 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 180 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:45:36,571 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 184 DAG size of output: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:45:44,998 WARN L233 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 335 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:45:45,258 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2410#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 13:45:45,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:45:45,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:45:45,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 13:45:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130598614] [2022-12-14 13:45:45,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:45:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 13:45:45,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:45:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 13:45:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-12-14 13:45:45,260 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 13:45:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:45:45,437 INFO L93 Difference]: Finished difference Result 215 states and 308 transitions. [2022-12-14 13:45:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 13:45:45,438 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2022-12-14 13:45:45,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:45:45,439 INFO L225 Difference]: With dead ends: 215 [2022-12-14 13:45:45,439 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 13:45:45,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 13:45:45,440 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 63 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:45:45,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 97 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:45:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 13:45:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 91. [2022-12-14 13:45:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 13:45:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2022-12-14 13:45:45,456 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 43 [2022-12-14 13:45:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:45:45,457 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2022-12-14 13:45:45,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 13:45:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2022-12-14 13:45:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 13:45:45,458 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:45:45,458 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:45:45,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:45:45,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:45:45,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:45:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:45:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1522509864, now seen corresponding path program 1 times [2022-12-14 13:45:45,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:45:45,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142780239] [2022-12-14 13:45:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:45:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:45:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:45:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 13:45:45,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:45:45,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142780239] [2022-12-14 13:45:45,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142780239] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:45:45,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276573923] [2022-12-14 13:45:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:45:45,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:45:45,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:45:45,801 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:45:45,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:45:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:45:45,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-14 13:45:45,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:45:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:45:45,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:45:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 13:45:46,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276573923] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:45:46,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [783251639] [2022-12-14 13:45:46,857 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-12-14 13:45:46,857 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:45:46,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:45:46,858 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:45:46,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:46:31,046 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-12-14 13:46:31,075 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-12-14 13:46:31,218 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:46:41,338 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 180 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:46:53,541 WARN L233 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 335 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:46:53,868 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3155#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 13:46:53,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:46:53,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:46:53,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 9] total 23 [2022-12-14 13:46:53,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982647041] [2022-12-14 13:46:53,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:46:53,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 13:46:53,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:46:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 13:46:53,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 13:46:53,871 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 23 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 8 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 13:46:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:46:54,659 INFO L93 Difference]: Finished difference Result 196 states and 285 transitions. [2022-12-14 13:46:54,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 13:46:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 8 states have call predecessors, (11), 5 states have call successors, (11) Word has length 45 [2022-12-14 13:46:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:46:54,660 INFO L225 Difference]: With dead ends: 196 [2022-12-14 13:46:54,660 INFO L226 Difference]: Without dead ends: 118 [2022-12-14 13:46:54,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=333, Invalid=2973, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 13:46:54,662 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 144 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:46:54,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 418 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:46:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-14 13:46:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 70. [2022-12-14 13:46:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-14 13:46:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-12-14 13:46:54,674 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 45 [2022-12-14 13:46:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:46:54,675 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-12-14 13:46:54,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 8 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 13:46:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-12-14 13:46:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 13:46:54,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:46:54,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:46:54,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:46:54,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 13:46:54,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:46:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:46:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1603459493, now seen corresponding path program 1 times [2022-12-14 13:46:54,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:46:54,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098267864] [2022-12-14 13:46:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:46:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:46:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:46:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 13:46:54,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:46:54,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098267864] [2022-12-14 13:46:54,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098267864] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:46:54,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24699031] [2022-12-14 13:46:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:46:54,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:46:54,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:46:54,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:46:55,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:46:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:46:55,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 13:46:55,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:46:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 13:46:55,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:46:55,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24699031] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:46:55,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:46:55,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-14 13:46:55,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576963445] [2022-12-14 13:46:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:46:55,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:46:55,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:46:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:46:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:46:55,066 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:46:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:46:55,088 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2022-12-14 13:46:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:46:55,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-12-14 13:46:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:46:55,089 INFO L225 Difference]: With dead ends: 75 [2022-12-14 13:46:55,089 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:46:55,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:46:55,090 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:46:55,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:46:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:46:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:46:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-12-14 13:46:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:46:55,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2022-12-14 13:46:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:46:55,092 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:46:55,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 13:46:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:46:55,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:46:55,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:46:55,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 13:46:55,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:46:55,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:47:01,671 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (let ((.cse1 (not (= |#NULL.offset| 0))) (.cse3 (not (= |base2flt_#in~m| 0))) (.cse2 (not (= |#NULL.base| 0)))) (and (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) .cse1 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse2 .cse3 (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse1 (and (<= |base2flt_#in~e| base2flt_~e) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse3) (<= base2flt_~e 127) (or .cse3 (<= (mod |base2flt_#res| 4294967296) 0)) (not (= |base2flt_#in~m| 1))) .cse2 (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))))) [2022-12-14 13:47:01,671 INFO L895 garLoopResultBuilder]: At program point $Ultimate##27(line 76) the Hoare annotation is: (let ((.cse4 (not (= |base2flt_#in~m| 0))) (.cse3 (not (= |#NULL.offset| 0))) (.cse5 (= |base2flt_#in~m| 1))) (let ((.cse0 (+ 129 base2flt_~e)) (.cse1 (let ((.cse17 (select |#memory_int| 1))) (let ((.cse6 (not (= (select .cse17 0) 48))) (.cse7 (not (= 2 (select |#length| 1)))) (.cse8 (not (< 0 |#StackHeapBarrier|))) (.cse9 (not (= (select |#valid| 3) 1))) (.cse10 (not (= (select |#length| 3) 12))) (.cse11 (not (= (select |#valid| 0) 0))) (.cse12 (not (= (select .cse17 1) 0))) (.cse13 (not (= 22 (select |#length| 2)))) (.cse14 (not (= (select |#valid| 1) 1))) (.cse15 (not (= (select |#valid| 2) 1))) (.cse16 (not (= |base2flt_#in~e| 0)))) (and (or .cse6 .cse3 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse4 .cse15 .cse16) (or .cse6 .cse3 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (not .cse5)))))) (.cse2 (not (= |#NULL.base| 0)))) (and (or (and (= (mod base2flt_~m 2) 0) (< 0 .cse0) (<= base2flt_~e 126)) .cse1 .cse2) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse3 (and (<= 0 .cse0) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse4) (<= base2flt_~e 127) (or .cse4 (<= (mod |base2flt_#res| 4294967296) 0))) .cse2 (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))) (or .cse5 .cse1 .cse2)))) [2022-12-14 13:47:01,671 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2022-12-14 13:47:01,671 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2022-12-14 13:47:01,671 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse0 (not (= |#NULL.offset| 0))) (.cse1 (not (= |#NULL.base| 0))) (.cse4 (<= (mod |base2flt_#res| 4294967296) 0)) (.cse2 (+ 129 base2flt_~e)) (.cse5 (= base2flt_~m |base2flt_#in~m|)) (.cse3 (not (= |base2flt_#in~m| 0)))) (and (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse0 .cse1 (not (<= 0 |#StackHeapBarrier|)) (and (<= 0 .cse2) (or .cse3 .cse4 (and .cse5 (= base2flt_~__retres4~0 0))) (<= base2flt_~e 127)) (not (<= |base2flt_#in~e| 127))) (let ((.cse6 (select |#memory_int| 1))) (or (not (= (select .cse6 0) 48)) .cse0 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse6 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse1 (let ((.cse7 (= base2flt_~e |base2flt_#in~e|))) (and (or .cse7 .cse3 .cse4) (= (mod base2flt_~m 2) 0) (< 0 .cse2) (<= base2flt_~__retres4~0 0) (or (and .cse7 .cse5) (<= (+ 128 base2flt_~e) 0)) (<= 0 base2flt_~__retres4~0))) .cse3 (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))))) [2022-12-14 13:47:01,671 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 82) the Hoare annotation is: true [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (let ((.cse0 (not (= |#NULL.offset| 0))) (.cse2 (not (= |#NULL.base| 0))) (.cse1 (not (= |base2flt_#in~m| 0)))) (and (or (not (<= 0 (+ 128 |base2flt_#in~e|))) .cse0 (and (= (mod base2flt_~m 2) 0) (< 0 (+ 129 base2flt_~e)) (or (<= (mod base2flt_~__retres4~0 4294967296) 0) .cse1) (<= base2flt_~e 126) (or .cse1 (<= (mod |base2flt_#res| 4294967296) 0))) .cse2 (and (= base2flt_~e |base2flt_#in~e|) (= base2flt_~m |base2flt_#in~m|) (not (= (mod base2flt_~m 4294967296) 0))) (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127))) (let ((.cse3 (select |#memory_int| 1))) (or (not (= (select .cse3 0) 48)) .cse0 (not (= 2 (select |#length| 1))) (not (< 0 |#StackHeapBarrier|)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse3 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) .cse2 .cse1 (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))))) [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2022-12-14 13:47:01,672 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 13:47:01,672 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2022-12-14 13:47:01,673 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 13:47:01,673 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2022-12-14 13:47:01,673 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:47:01,673 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2022-12-14 13:47:01,673 INFO L895 garLoopResultBuilder]: At program point L256-1(lines 256 272) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 13:47:01,673 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 13:47:01,673 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2022-12-14 13:47:01,673 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (let ((.cse1 (not (= |ULTIMATE.start_main_~sb~0#1| 0))) (.cse0 (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)) (.cse2 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (or (<= (mod |ULTIMATE.start_main_~r_mul~0#1| 4294967296) .cse0) .cse1) (= 0 |ULTIMATE.start_main_~tmp___1~0#1|) (<= .cse0 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (or .cse1 (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) .cse0)) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 13:47:01,673 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2022-12-14 13:47:01,673 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (<= |ULTIMATE.start_main_~eb~2#1| 127)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128))) (.cse3 (= 22 (select |#length| 2))) (.cse8 (not (= |ULTIMATE.start_main_~sb~0#1| 0))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (= (select |#valid| 1) 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128))) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= (select .cse18 0) 48)) (.cse14 (<= |ULTIMATE.start_main_~ea~2#1| 127)) (.cse15 (= (select .cse18 1) 0)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (let ((.cse4 (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and .cse0 .cse1 .cse2 .cse3 (<= .cse4 0) .cse5 .cse6 .cse7 (or .cse8 (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) .cse4)) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)) (and .cse0 .cse1 (< |ULTIMATE.start_main_~a~0#1| (+ (* 4294967296 (div |ULTIMATE.start_main_~a~0#1| 4294967296)) 1)) .cse2 .cse3 .cse8 .cse5 .cse6 .cse7 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)))) [2022-12-14 13:47:01,673 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= |ULTIMATE.start_main_~zero~0#1| 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-12-14 13:47:01,674 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2022-12-14 13:47:01,674 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-12-14 13:47:01,674 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-12-14 13:47:01,674 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2022-12-14 13:47:01,674 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2022-12-14 13:47:01,674 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 20) the Hoare annotation is: true [2022-12-14 13:47:01,674 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-12-14 13:47:01,676 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:01,677 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:47:01,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:47:01 BoogieIcfgContainer [2022-12-14 13:47:01,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:47:01,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:47:01,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:47:01,697 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:47:01,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:28" (3/4) ... [2022-12-14 13:47:01,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:47:01,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-12-14 13:47:01,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 13:47:01,708 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 53 nodes and edges [2022-12-14 13:47:01,708 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-12-14 13:47:01,708 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 13:47:01,708 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 13:47:01,726 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || ((0 <= 129 + e && ((!(\old(m) == 0) || \result % 4294967296 <= 0) || (m == \old(m) && __retres4 == 0))) && e <= 127)) || !(\old(e) <= 127)) && ((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || (((((((e == \old(e) || !(\old(m) == 0)) || \result % 4294967296 <= 0) && m % 2 == 0) && 0 < 129 + e) && __retres4 <= 0) && ((e == \old(e) && m == \old(m)) || 128 + e <= 0)) && 0 <= __retres4)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) [2022-12-14 13:47:01,726 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((m % 2 == 0 && 0 < 129 + e) && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 126) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || ((e == \old(e) && m == \old(m)) && !(m % 4294967296 == 0))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) && (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) [2022-12-14 13:47:01,726 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((\old(e) <= e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0)) && !(\old(m) == 1))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) [2022-12-14 13:47:01,726 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((m % 2 == 0 && 0 < 129 + e) && e <= 126) || (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1)))) || !(#NULL == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || (((0 <= 129 + e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127))) && ((\old(m) == 1 || (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1)))) || !(#NULL == 0)) [2022-12-14 13:47:01,740 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:47:01,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:47:01,740 INFO L158 Benchmark]: Toolchain (without parser) took 154157.87ms. Allocated memory was 167.8MB in the beginning and 358.6MB in the end (delta: 190.8MB). Free memory was 134.2MB in the beginning and 135.9MB in the end (delta: -1.7MB). Peak memory consumption was 190.7MB. Max. memory is 16.1GB. [2022-12-14 13:47:01,740 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:47:01,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.77ms. Allocated memory is still 167.8MB. Free memory was 134.2MB in the beginning and 121.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 13:47:01,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.06ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 119.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:47:01,741 INFO L158 Benchmark]: Boogie Preprocessor took 20.81ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 116.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:47:01,741 INFO L158 Benchmark]: RCFGBuilder took 542.19ms. Allocated memory is still 167.8MB. Free memory was 116.9MB in the beginning and 71.8MB in the end (delta: 45.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-12-14 13:47:01,741 INFO L158 Benchmark]: TraceAbstraction took 153296.66ms. Allocated memory was 167.8MB in the beginning and 358.6MB in the end (delta: 190.8MB). Free memory was 71.3MB in the beginning and 141.1MB in the end (delta: -69.9MB). Peak memory consumption was 155.1MB. Max. memory is 16.1GB. [2022-12-14 13:47:01,741 INFO L158 Benchmark]: Witness Printer took 42.68ms. Allocated memory is still 358.6MB. Free memory was 141.1MB in the beginning and 135.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 13:47:01,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 138.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.77ms. Allocated memory is still 167.8MB. Free memory was 134.2MB in the beginning and 121.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.06ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 119.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.81ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 116.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 542.19ms. Allocated memory is still 167.8MB. Free memory was 116.9MB in the beginning and 71.8MB in the end (delta: 45.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 153296.66ms. Allocated memory was 167.8MB in the beginning and 358.6MB in the end (delta: 190.8MB). Free memory was 71.3MB in the beginning and 141.1MB in the end (delta: -69.9MB). Peak memory consumption was 155.1MB. Max. memory is 16.1GB. * Witness Printer took 42.68ms. Allocated memory is still 358.6MB. Free memory was 141.1MB in the beginning and 135.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 153.2s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 652 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 617 mSDsluCounter, 1564 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1343 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1894 IncrementalHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 221 mSDtfsCounter, 1894 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 804 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2898 ImplicationChecksByTransitivity, 50.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 230 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 131 PreInvPairs, 264 NumberOfFragments, 1512 HoareAnnotationTreeSize, 131 FomulaSimplifications, 7854 FormulaSimplificationTreeSizeReduction, 3.5s HoareSimplificationTime, 13 FomulaSimplificationsInter, 90858 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 570 NumberOfCodeBlocks, 570 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 787 ConstructedInterpolants, 0 QuantifiedInterpolants, 1982 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1076 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 417/559 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: OVERALL_TIME: 0.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 33, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 18, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 12, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 77, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 113, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 33, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 12, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 537, DAG_COMPRESSION_RETAINED_NODES: 116, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: (((((m % 2 == 0 && 0 < 129 + e) && e <= 126) || (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1)))) || !(#NULL == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || (((0 <= 129 + e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127))) && ((\old(m) == 1 || (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(\valid[2] == 1)) || !(\old(e) == 0)) || !(\old(m) == 1)))) || !(#NULL == 0)) - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (((((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && zero % 4294967296 <= 0) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[1] == 1) && (!(sb == 0) || __retres10 % 4294967296 <= zero % 4294967296)) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && a < 4294967296 * (a / 4294967296) + 1) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && !(sb == 0)) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || ((0 <= 129 + e && ((!(\old(m) == 0) || \result % 4294967296 <= 0) || (m == \old(m) && __retres4 == 0))) && e <= 127)) || !(\old(e) <= 127)) && ((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || (((((((e == \old(e) || !(\old(m) == 0)) || \result % 4294967296 <= 0) && m % 2 == 0) && 0 < 129 + e) && __retres4 <= 0) && ((e == \old(e) && m == \old(m)) || 128 + e <= 0)) && 0 <= __retres4)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((m % 2 == 0 && 0 < 129 + e) && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 126) && (!(\old(m) == 0) || \result % 4294967296 <= 0))) || !(#NULL == 0)) || ((e == \old(e) && m == \old(m)) && !(m % 4294967296 == 0))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) && (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && (((((!(0 <= 128 + \old(e)) || !(#NULL == 0)) || ((((\old(e) <= e && (__retres4 % 4294967296 <= 0 || !(\old(m) == 0))) && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 <= 0)) && !(\old(m) == 1))) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) - InvariantResult [Line: 256]: Loop Invariant Derived loop invariant: ((((((((((((((eb <= 127 && unknown-#length-unknown[3] == 12) && 0 <= ea + 128) && 22 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && 0 <= eb + 128) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && ea <= 127) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-12-14 13:47:01,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_599b59b1-20f5-4c0f-a67a-b4025ac7e308/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE