./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/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_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 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-5e519f3 [2022-11-03 03:35:04,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:35:04,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:35:04,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:35:04,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:35:04,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:35:04,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:35:04,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:35:04,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:35:04,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:35:04,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:35:04,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:35:04,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:35:04,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:35:04,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:35:04,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:35:04,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:35:04,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:35:04,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:35:04,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:35:04,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:35:04,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:35:04,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:35:04,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:35:04,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:35:04,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:35:04,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:35:04,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:35:04,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:35:04,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:35:04,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:35:04,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:35:04,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:35:04,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:35:04,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:35:04,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:35:04,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:35:04,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:35:04,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:35:04,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:35:04,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:35:04,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:35:04,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:35:04,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:35:04,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:35:04,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:35:04,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:35:04,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:35:04,611 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:35:04,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:35:04,612 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:35:04,612 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:35:04,613 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:35:04,613 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:35:04,614 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:35:04,614 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:35:04,614 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:35:04,614 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:35:04,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:35:04,615 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:35:04,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:35:04,616 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:35:04,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:35:04,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:35:04,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:35:04,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:35:04,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:35:04,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:35:04,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:35:04,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:35:04,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:35:04,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:35:04,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:35:04,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:35:04,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:35:04,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:35:04,621 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:35:04,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:35:04,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:35:04,622 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:35:04,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:35:04,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:35:04,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:35:04,623 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_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2022-11-03 03:35:04,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:35:04,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:35:04,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:35:04,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:35:04,958 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:35:04,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-03 03:35:05,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/data/c9bdd5d5b/85bc5c41c1244c7493f838516fcbbf46/FLAG47debfef2 [2022-11-03 03:35:05,648 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:35:05,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-03 03:35:05,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/data/c9bdd5d5b/85bc5c41c1244c7493f838516fcbbf46/FLAG47debfef2 [2022-11-03 03:35:05,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/data/c9bdd5d5b/85bc5c41c1244c7493f838516fcbbf46 [2022-11-03 03:35:05,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:35:05,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:35:05,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:35:05,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:35:05,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:35:05,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:35:05" (1/1) ... [2022-11-03 03:35:05,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dfa7ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:05, skipping insertion in model container [2022-11-03 03:35:05,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:35:05" (1/1) ... [2022-11-03 03:35:05,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:35:06,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:35:06,276 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-03 03:35:06,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:35:06,332 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:35:06,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-03 03:35:06,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:35:06,388 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:35:06,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06 WrapperNode [2022-11-03 03:35:06,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:35:06,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:35:06,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:35:06,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:35:06,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,432 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2022-11-03 03:35:06,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:35:06,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:35:06,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:35:06,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:35:06,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:35:06,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:35:06,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:35:06,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:35:06,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (1/1) ... [2022-11-03 03:35:06,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:35:06,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:06,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:35:06,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:35:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:35:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:35:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-03 03:35:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-03 03:35:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:35:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:35:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:35:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:35:06,719 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:35:06,722 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:35:07,116 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:35:07,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:35:07,233 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:35:07,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:35:07 BoogieIcfgContainer [2022-11-03 03:35:07,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:35:07,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:35:07,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:35:07,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:35:07,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:35:05" (1/3) ... [2022-11-03 03:35:07,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de5fe34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:35:07, skipping insertion in model container [2022-11-03 03:35:07,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:35:06" (2/3) ... [2022-11-03 03:35:07,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de5fe34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:35:07, skipping insertion in model container [2022-11-03 03:35:07,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:35:07" (3/3) ... [2022-11-03 03:35:07,253 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2022-11-03 03:35:07,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:35:07,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:35:07,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:35:07,374 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;@72e164bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:35:07,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:35:07,380 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) [2022-11-03 03:35:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 03:35:07,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:07,392 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] [2022-11-03 03:35:07,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:07,399 INFO L85 PathProgramCache]: Analyzing trace with hash -728132329, now seen corresponding path program 1 times [2022-11-03 03:35:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:07,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981368217] [2022-11-03 03:35:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:07,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:07,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:07,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981368217] [2022-11-03 03:35:07,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981368217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:07,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687816527] [2022-11-03 03:35:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:07,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:07,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:07,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:07,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:35:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:08,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:35:08,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:08,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:35:08,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687816527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:08,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [754964157] [2022-11-03 03:35:08,852 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-03 03:35:08,852 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:08,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:08,862 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:08,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:09,026 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-03 03:35:09,107 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:10,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [754964157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:10,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:10,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 12, 11] total 27 [2022-11-03 03:35:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136539105] [2022-11-03 03:35:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:10,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:35:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:10,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:35:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-03 03:35:10,415 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) [2022-11-03 03:35:10,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:10,810 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2022-11-03 03:35:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:35:10,813 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 [2022-11-03 03:35:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:10,823 INFO L225 Difference]: With dead ends: 108 [2022-11-03 03:35:10,823 INFO L226 Difference]: Without dead ends: 65 [2022-11-03 03:35:10,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-03 03:35:10,831 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 73 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:10,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 195 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:35:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-03 03:35:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2022-11-03 03:35:10,885 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) [2022-11-03 03:35:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2022-11-03 03:35:10,889 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2022-11-03 03:35:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:10,889 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2022-11-03 03:35:10,890 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) [2022-11-03 03:35:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2022-11-03 03:35:10,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 03:35:10,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:10,893 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] [2022-11-03 03:35:10,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:11,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 03:35:11,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:11,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1732421976, now seen corresponding path program 1 times [2022-11-03 03:35:11,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:11,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483080652] [2022-11-03 03:35:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:11,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:11,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:11,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483080652] [2022-11-03 03:35:11,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483080652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:11,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884013310] [2022-11-03 03:35:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:11,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:11,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:11,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:11,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:35:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:11,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:35:11,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:11,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:35:12,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884013310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:12,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [502420855] [2022-11-03 03:35:12,042 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 03:35:12,043 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:12,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:12,044 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:12,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:12,193 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-03 03:35:12,318 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:14,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [502420855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:14,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:14,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 12, 11] total 30 [2022-11-03 03:35:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183709065] [2022-11-03 03:35:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:35:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:35:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:35:14,127 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-11-03 03:35:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:14,442 INFO L93 Difference]: Finished difference Result 114 states and 158 transitions. [2022-11-03 03:35:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:35:14,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 37 [2022-11-03 03:35:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:14,444 INFO L225 Difference]: With dead ends: 114 [2022-11-03 03:35:14,444 INFO L226 Difference]: Without dead ends: 68 [2022-11-03 03:35:14,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:35:14,447 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 55 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:14,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 219 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:35:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-03 03:35:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2022-11-03 03:35:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 43 states have internal predecessors, (57), 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) [2022-11-03 03:35:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2022-11-03 03:35:14,464 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 37 [2022-11-03 03:35:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:14,464 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2022-11-03 03:35:14,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-11-03 03:35:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2022-11-03 03:35:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 03:35:14,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:14,466 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] [2022-11-03 03:35:14,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:35:14,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:14,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1052079670, now seen corresponding path program 1 times [2022-11-03 03:35:14,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:14,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741257137] [2022-11-03 03:35:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:14,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:15,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:15,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741257137] [2022-11-03 03:35:15,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741257137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501327365] [2022-11-03 03:35:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:15,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:15,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:15,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:15,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:35:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:15,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:35:15,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:35:15,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 03:35:15,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501327365] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:15,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1007516941] [2022-11-03 03:35:15,669 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 03:35:15,670 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:15,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:15,670 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:15,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:16,942 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2022-11-03 03:35:16,950 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:35:17,145 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:19,988 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1193#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:35:19,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:19,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:19,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 11] total 22 [2022-11-03 03:35:19,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603294901] [2022-11-03 03:35:19,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:19,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 03:35:19,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 03:35:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1347, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 03:35:19,992 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 03:35:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:21,238 INFO L93 Difference]: Finished difference Result 175 states and 274 transitions. [2022-11-03 03:35:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 03:35:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 40 [2022-11-03 03:35:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:21,243 INFO L225 Difference]: With dead ends: 175 [2022-11-03 03:35:21,243 INFO L226 Difference]: Without dead ends: 135 [2022-11-03 03:35:21,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=327, Invalid=2979, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 03:35:21,246 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 181 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:21,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 398 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:35:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-03 03:35:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 76. [2022-11-03 03:35:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 63 states have internal predecessors, (82), 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) [2022-11-03 03:35:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2022-11-03 03:35:21,283 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 40 [2022-11-03 03:35:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:21,283 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2022-11-03 03:35:21,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 03:35:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2022-11-03 03:35:21,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 03:35:21,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:21,293 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:21,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:21,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:21,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1622938740, now seen corresponding path program 1 times [2022-11-03 03:35:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:21,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189599640] [2022-11-03 03:35:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:21,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:21,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189599640] [2022-11-03 03:35:21,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189599640] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:21,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072526265] [2022-11-03 03:35:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:21,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:21,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:21,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:21,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:35:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:21,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:35:21,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 03:35:21,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:21,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072526265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:21,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [107351880] [2022-11-03 03:35:21,987 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 03:35:21,987 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:21,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:21,988 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:21,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:22,405 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:35:22,487 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:23,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [107351880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:23,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:23,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 6, 6] total 30 [2022-11-03 03:35:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599508683] [2022-11-03 03:35:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:23,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:35:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:35:23,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:35:23,833 INFO L87 Difference]: Start difference. First operand 76 states and 98 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) [2022-11-03 03:35:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:25,040 INFO L93 Difference]: Finished difference Result 145 states and 212 transitions. [2022-11-03 03:35:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:35:25,041 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 42 [2022-11-03 03:35:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:25,043 INFO L225 Difference]: With dead ends: 145 [2022-11-03 03:35:25,043 INFO L226 Difference]: Without dead ends: 130 [2022-11-03 03:35:25,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:35:25,046 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 147 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:25,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 232 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:35:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-03 03:35:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 84. [2022-11-03 03:35:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 69 states have internal predecessors, (86), 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) [2022-11-03 03:35:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2022-11-03 03:35:25,115 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 42 [2022-11-03 03:35:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:25,116 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2022-11-03 03:35:25,116 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) [2022-11-03 03:35:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2022-11-03 03:35:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 03:35:25,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:25,123 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:25,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:25,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:25,345 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:25,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1057231733, now seen corresponding path program 1 times [2022-11-03 03:35:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:25,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530549676] [2022-11-03 03:35:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:25,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:25,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530549676] [2022-11-03 03:35:25,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530549676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565290315] [2022-11-03 03:35:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:25,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:25,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:35:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:25,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 03:35:25,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:35:25,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 03:35:26,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565290315] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:26,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:35:26,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 10] total 19 [2022-11-03 03:35:26,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576575524] [2022-11-03 03:35:26,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:26,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:35:26,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:26,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:35:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:35:26,174 INFO L87 Difference]: Start difference. First operand 84 states and 113 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) [2022-11-03 03:35:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:26,293 INFO L93 Difference]: Finished difference Result 106 states and 141 transitions. [2022-11-03 03:35:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:35:26,294 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 44 [2022-11-03 03:35:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:26,295 INFO L225 Difference]: With dead ends: 106 [2022-11-03 03:35:26,295 INFO L226 Difference]: Without dead ends: 89 [2022-11-03 03:35:26,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:35:26,297 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 4 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:26,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 209 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:35:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-03 03:35:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2022-11-03 03:35:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 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) [2022-11-03 03:35:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2022-11-03 03:35:26,322 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 44 [2022-11-03 03:35:26,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:26,322 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2022-11-03 03:35:26,323 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) [2022-11-03 03:35:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2022-11-03 03:35:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 03:35:26,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:26,325 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-11-03 03:35:26,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:26,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:26,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:26,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:26,544 INFO L85 PathProgramCache]: Analyzing trace with hash 921575607, now seen corresponding path program 1 times [2022-11-03 03:35:26,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:26,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726781245] [2022-11-03 03:35:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:26,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:26,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:26,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726781245] [2022-11-03 03:35:26,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726781245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:26,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748584442] [2022-11-03 03:35:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:26,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:26,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:26,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:26,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:35:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:26,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:35:26,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 03:35:26,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:27,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748584442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:27,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [895482366] [2022-11-03 03:35:27,022 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 03:35:27,022 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:27,023 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:27,023 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:27,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:27,953 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-03 03:35:27,962 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:35:28,053 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:34,005 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3016#(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 [2022-11-03 03:35:34,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:34,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:34,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-03 03:35:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480929420] [2022-11-03 03:35:34,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:34,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:35:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:35:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2022-11-03 03:35:34,009 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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) [2022-11-03 03:35:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:34,363 INFO L93 Difference]: Finished difference Result 250 states and 360 transitions. [2022-11-03 03:35:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:35:34,364 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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 46 [2022-11-03 03:35:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:34,366 INFO L225 Difference]: With dead ends: 250 [2022-11-03 03:35:34,367 INFO L226 Difference]: Without dead ends: 179 [2022-11-03 03:35:34,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:35:34,369 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 74 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:34,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 189 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:35:34,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-03 03:35:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 103. [2022-11-03 03:35:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 89 states have internal predecessors, (115), 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) [2022-11-03 03:35:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 134 transitions. [2022-11-03 03:35:34,402 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 134 transitions. Word has length 46 [2022-11-03 03:35:34,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:34,402 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 134 transitions. [2022-11-03 03:35:34,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 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) [2022-11-03 03:35:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 134 transitions. [2022-11-03 03:35:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 03:35:34,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:34,404 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-11-03 03:35:34,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:34,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:35:34,617 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash -894465482, now seen corresponding path program 1 times [2022-11-03 03:35:34,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:34,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342316830] [2022-11-03 03:35:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:34,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:35:34,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:34,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342316830] [2022-11-03 03:35:34,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342316830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:34,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283535512] [2022-11-03 03:35:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:34,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:34,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:34,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:35:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:34,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 03:35:34,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:35:35,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-03 03:35:35,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283535512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:35,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1576789324] [2022-11-03 03:35:35,531 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 03:35:35,531 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:35,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:35,531 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:35,532 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:36,208 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-03 03:35:36,218 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:35:36,336 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:43,549 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3844#(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 [2022-11-03 03:35:43,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:43,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:43,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2022-11-03 03:35:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899816952] [2022-11-03 03:35:43,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:43,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:35:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:35:43,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:35:43,552 INFO L87 Difference]: Start difference. First operand 103 states and 134 transitions. Second operand has 19 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:35:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:44,311 INFO L93 Difference]: Finished difference Result 208 states and 268 transitions. [2022-11-03 03:35:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 03:35:44,312 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 48 [2022-11-03 03:35:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:44,313 INFO L225 Difference]: With dead ends: 208 [2022-11-03 03:35:44,313 INFO L226 Difference]: Without dead ends: 87 [2022-11-03 03:35:44,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=279, Invalid=2171, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 03:35:44,316 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 80 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:44,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 315 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:35:44,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-03 03:35:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2022-11-03 03:35:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:35:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2022-11-03 03:35:44,337 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 48 [2022-11-03 03:35:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:44,338 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2022-11-03 03:35:44,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:35:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2022-11-03 03:35:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 03:35:44,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:44,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-11-03 03:35:44,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:44,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:44,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash 343472751, now seen corresponding path program 2 times [2022-11-03 03:35:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848034933] [2022-11-03 03:35:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:35:44,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848034933] [2022-11-03 03:35:44,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848034933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484388695] [2022-11-03 03:35:44,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:35:44,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:44,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:44,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:44,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:35:45,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 03:35:45,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:35:45,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:35:45,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-03 03:35:45,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-03 03:35:45,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484388695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:35:45,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1844049425] [2022-11-03 03:35:45,883 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 03:35:45,884 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:45,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:45,884 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:45,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:46,456 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-03 03:35:46,466 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:35:46,594 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:54,832 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4612#(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 [2022-11-03 03:35:54,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:54,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:35:54,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 21 [2022-11-03 03:35:54,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264504759] [2022-11-03 03:35:54,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:54,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 03:35:54,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 03:35:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:35:54,835 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 03:35:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:56,029 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2022-11-03 03:35:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 03:35:56,030 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 55 [2022-11-03 03:35:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:56,031 INFO L225 Difference]: With dead ends: 119 [2022-11-03 03:35:56,031 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:35:56,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=340, Invalid=2522, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 03:35:56,033 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 143 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:56,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 201 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:35:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:35:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:35:56,034 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) [2022-11-03 03:35:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:35:56,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2022-11-03 03:35:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:56,035 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:35:56,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 03:35:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:35:56,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:35:56,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:35:56,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:56,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:56,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 03:36:15,865 INFO L895 garLoopResultBuilder]: At program point L73(lines 35 75) the Hoare annotation is: (let ((.cse4 (not (= |base2flt_#in~m| 0))) (.cse3 (not (= |#NULL.offset| 0)))) (let ((.cse0 (+ 129 base2flt_~e)) (.cse1 (let ((.cse16 (select |#memory_int| 1))) (let ((.cse5 (not (= (select .cse16 0) 48))) (.cse6 (not (= 2 (select |#length| 1)))) (.cse7 (not (< 0 |#StackHeapBarrier|))) (.cse8 (not (= (select |#valid| 3) 1))) (.cse9 (not (= (select |#length| 3) 12))) (.cse10 (not (= (select |#valid| 0) 0))) (.cse11 (not (= (select .cse16 1) 0))) (.cse12 (not (= 22 (select |#length| 2)))) (.cse13 (not (= (select |#valid| 1) 1))) (.cse14 (not (= (select |#valid| 2) 1))) (.cse15 (not (= |base2flt_#in~e| 0)))) (and (or .cse5 .cse3 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse4 .cse14 .cse15) (or .cse5 .cse3 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (not (= |base2flt_#in~m| 1))))))) (.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 .cse1 .cse2 (not (<= (mod |base2flt_#in~m| 4294967296) 0)))))) [2022-11-03 03:36:15,865 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))))) [2022-11-03 03:36:15,865 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2022-11-03 03:36:15,865 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2022-11-03 03:36:15,865 INFO L902 garLoopResultBuilder]: At program point base2fltENTRY(lines 24 82) the Hoare annotation is: true [2022-11-03 03:36:15,866 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse9 (+ 129 base2flt_~e)) (.cse7 (= base2flt_~e |base2flt_#in~e|)) (.cse4 (= base2flt_~m |base2flt_#in~m|))) (let ((.cse5 (or (<= (+ 128 base2flt_~e) 0) (and .cse7 (= (mod base2flt_~m 4294967296) 0) .cse4))) (.cse6 (< 0 .cse9)) (.cse1 (not (= |#NULL.offset| 0))) (.cse2 (not (= |#NULL.base| 0))) (.cse3 (not (= |base2flt_#in~m| 0))) (.cse8 (mod |base2flt_#res| 4294967296))) (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 (and .cse4 .cse5 .cse6 (or .cse7 (<= .cse8 0)) (<= base2flt_~__retres4~0 0) (<= 0 base2flt_~__retres4~0)) (not (= (select |#valid| 2) 1)) (not (= |base2flt_#in~e| 0)))) (or (not (<= 0 (+ 128 |base2flt_#in~e|))) (and .cse4 .cse5 .cse6 (= base2flt_~__retres4~0 0)) .cse1 .cse2 (and (<= 0 .cse9) (<= base2flt_~e 127) (or .cse3 (< (+ .cse8 (* (div (+ 4294967295 (- .cse8)) 4294967296) 4294967296)) 1))) (not (<= 0 |#StackHeapBarrier|)) (not (<= |base2flt_#in~e| 127)))))) [2022-11-03 03:36:15,866 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2022-11-03 03:36:15,866 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2022-11-03 03:36:15,866 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2022-11-03 03:36:15,866 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2022-11-03 03:36:15,867 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)))))) [2022-11-03 03:36:15,867 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2022-11-03 03:36:15,867 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))) [2022-11-03 03:36:15,867 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2022-11-03 03:36:15,868 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 03:36:15,868 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2022-11-03 03:36:15,868 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))) [2022-11-03 03:36:15,868 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2022-11-03 03:36:15,868 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2022-11-03 03:36:15,868 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 03:36:15,868 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2022-11-03 03:36:15,869 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2022-11-03 03:36:15,869 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))) [2022-11-03 03:36:15,869 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))) [2022-11-03 03:36:15,869 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2022-11-03 03:36:15,870 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2022-11-03 03:36:15,870 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2022-11-03 03:36:15,870 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)) (.cse1 (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)) (= 0 |ULTIMATE.start_main_~tmp___1~0#1|) (<= .cse0 0) (<= (mod |ULTIMATE.start_main_~r_mul~0#1| 4294967296) .cse0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) .cse0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 03:36:15,870 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2022-11-03 03:36:15,871 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (let ((.cse17 (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))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128))) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse17 0) 48)) (.cse12 (<= |ULTIMATE.start_main_~ea~2#1| 127)) (.cse13 (= (select .cse17 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~zero~0#1| 0) (= |ULTIMATE.start_main_~sb~0#1| 1) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (let ((.cse16 (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and .cse0 .cse1 .cse2 .cse3 (<= .cse16 0) .cse4 .cse5 (<= (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) .cse16) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15))))) [2022-11-03 03:36:15,871 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2022-11-03 03:36:15,871 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))) [2022-11-03 03:36:15,872 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2022-11-03 03:36:15,872 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-03 03:36:15,872 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-11-03 03:36:15,872 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2022-11-03 03:36:15,872 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2022-11-03 03:36:15,873 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2022-11-03 03:36:15,873 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-03 03:36:15,877 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:15,879 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:36:15,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:36:15 BoogieIcfgContainer [2022-11-03 03:36:15,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:36:15,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:36:15,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:36:15,919 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:36:15,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:35:07" (3/4) ... [2022-11-03 03:36:15,924 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:36:15,930 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-11-03 03:36:15,931 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-03 03:36:15,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-03 03:36:15,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-03 03:36:15,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 03:36:15,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:36:15,966 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)) || (((((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && (e == \old(e) || \result % 4294967296 <= 0)) && __retres4 <= 0) && 0 <= __retres4)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((!(0 <= 128 + \old(e)) || (((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && __retres4 == 0)) || !(#NULL == 0)) || !(#NULL == 0)) || ((0 <= 129 + e && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 + (4294967295 + -(\result % 4294967296)) / 4294967296 * 4294967296 < 1))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) [2022-11-03 03:36:15,966 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)) [2022-11-03 03:36:15,966 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)) [2022-11-03 03:36:15,966 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))) && (((((((((((((((!(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)) || !(\old(m) % 4294967296 <= 0)) [2022-11-03 03:36:15,989 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:36:15,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:36:15,991 INFO L158 Benchmark]: Toolchain (without parser) took 70050.40ms. Allocated memory was 127.9MB in the beginning and 394.3MB in the end (delta: 266.3MB). Free memory was 94.3MB in the beginning and 302.1MB in the end (delta: -207.8MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2022-11-03 03:36:15,991 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 65.9MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:36:15,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.03ms. Allocated memory is still 127.9MB. Free memory was 94.0MB in the beginning and 101.4MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:36:15,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.48ms. Allocated memory is still 127.9MB. Free memory was 101.4MB in the beginning and 99.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:36:15,992 INFO L158 Benchmark]: Boogie Preprocessor took 52.74ms. Allocated memory is still 127.9MB. Free memory was 99.6MB in the beginning and 98.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:36:15,993 INFO L158 Benchmark]: RCFGBuilder took 749.53ms. Allocated memory is still 127.9MB. Free memory was 98.0MB in the beginning and 77.1MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-03 03:36:15,993 INFO L158 Benchmark]: TraceAbstraction took 68678.95ms. Allocated memory was 127.9MB in the beginning and 394.3MB in the end (delta: 266.3MB). Free memory was 76.6MB in the beginning and 306.3MB in the end (delta: -229.7MB). Peak memory consumption was 213.5MB. Max. memory is 16.1GB. [2022-11-03 03:36:15,994 INFO L158 Benchmark]: Witness Printer took 71.01ms. Allocated memory is still 394.3MB. Free memory was 306.3MB in the beginning and 302.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:36:15,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 65.9MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.03ms. Allocated memory is still 127.9MB. Free memory was 94.0MB in the beginning and 101.4MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.48ms. Allocated memory is still 127.9MB. Free memory was 101.4MB in the beginning and 99.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.74ms. Allocated memory is still 127.9MB. Free memory was 99.6MB in the beginning and 98.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 749.53ms. Allocated memory is still 127.9MB. Free memory was 98.0MB in the beginning and 77.1MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 68678.95ms. Allocated memory was 127.9MB in the beginning and 394.3MB in the end (delta: 266.3MB). Free memory was 76.6MB in the beginning and 306.3MB in the end (delta: -229.7MB). Peak memory consumption was 213.5MB. Max. memory is 16.1GB. * Witness Printer took 71.01ms. Allocated memory is still 394.3MB. Free memory was 306.3MB in the beginning and 302.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 68.5s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 19.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 795 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 757 mSDsluCounter, 1958 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1825 mSDsCounter, 184 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2130 IncrementalHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 184 mSolverCounterUnsat, 302 mSDtfsCounter, 2130 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1104 GetRequests, 798 SyntacticMatches, 11 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3689 ImplicationChecksByTransitivity, 32.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=6, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 246 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 147 PreInvPairs, 303 NumberOfFragments, 1526 HoareAnnotationTreeSize, 147 FomulaSimplifications, 19079 FormulaSimplificationTreeSizeReduction, 13.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 317313 FormulaSimplificationTreeSizeReductionInter, 6.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 688 NumberOfCodeBlocks, 679 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1008 ConstructedInterpolants, 0 QuantifiedInterpolants, 2750 SizeOfPredicates, 60 NumberOfNonLiveVariables, 1246 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 24 InterpolantComputations, 1 PerfectInterpolantSequences, 537/768 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: 1.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 49, DAG_INTERPRETER_EARLY_EXITS: 6, TOOLS_POST_APPLICATIONS: 66, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 24, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 16, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 106, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 154, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 21, 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: 49, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 16, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, 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: 804, DAG_COMPRESSION_RETAINED_NODES: 177, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: 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))) && (((((((((((((((!(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)) || !(\old(m) % 4294967296 <= 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 == 0) && sb == 1) && 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) || (((((((((((((((((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) && __retres10 % 4294967296 <= zero % 4294967296) && \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: ((((((((((((((!(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)) || (((((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && (e == \old(e) || \result % 4294967296 <= 0)) && __retres4 <= 0) && 0 <= __retres4)) || !(\valid[2] == 1)) || !(\old(e) == 0)) && ((((((!(0 <= 128 + \old(e)) || (((m == \old(m) && (128 + e <= 0 || ((e == \old(e) && m % 4294967296 == 0) && m == \old(m)))) && 0 < 129 + e) && __retres4 == 0)) || !(#NULL == 0)) || !(#NULL == 0)) || ((0 <= 129 + e && e <= 127) && (!(\old(m) == 0) || \result % 4294967296 + (4294967295 + -(\result % 4294967296)) / 4294967296 * 4294967296 < 1))) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(\old(e) <= 127)) - 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! [2022-11-03 03:36:16,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddb4ca-9153-4a9b-87d6-9d5f0fad3664/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE