./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_2_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6c5808fcdfedd93e514ea4bc51242b78bf5dcc9e332c7faf3dfcc4d6de127e2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:34:15,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:34:15,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:34:15,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:34:15,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:34:15,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:34:15,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:34:15,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:34:15,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:34:15,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:34:15,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:34:15,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:34:15,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:34:15,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:34:15,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:34:15,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:34:15,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:34:15,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:34:15,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:34:15,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:34:15,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:34:15,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:34:15,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:34:15,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:34:15,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:34:15,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:34:15,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:34:15,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:34:15,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:34:15,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:34:15,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:34:15,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:34:15,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:34:15,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:34:15,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:34:15,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:34:15,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:34:15,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:34:15,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:34:15,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:34:15,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:34:15,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:34:15,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:34:15,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:34:15,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:34:15,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:34:15,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:34:15,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:34:15,346 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:34:15,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:34:15,347 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:34:15,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:34:15,347 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:34:15,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:34:15,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:34:15,348 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:34:15,348 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:34:15,349 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:34:15,349 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:34:15,349 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:34:15,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:34:15,350 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:34:15,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:34:15,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:34:15,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:34:15,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:34:15,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:34:15,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:34:15,352 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:34:15,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:34:15,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:34:15,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:34:15,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:34:15,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:34:15,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:34:15,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:34:15,354 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:34:15,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:34:15,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:34:15,355 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:34:15,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:34:15,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:34:15,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:34:15,356 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_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c5808fcdfedd93e514ea4bc51242b78bf5dcc9e332c7faf3dfcc4d6de127e2 [2022-11-19 08:34:15,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:34:15,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:34:15,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:34:15,630 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:34:15,631 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:34:15,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/gcd_2+newton_2_3.i [2022-11-19 08:34:15,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data/5b02854e3/9cbe6418aec94a858b174d63909cb704/FLAG8fd299b43 [2022-11-19 08:34:16,150 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:34:16,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i [2022-11-19 08:34:16,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data/5b02854e3/9cbe6418aec94a858b174d63909cb704/FLAG8fd299b43 [2022-11-19 08:34:16,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data/5b02854e3/9cbe6418aec94a858b174d63909cb704 [2022-11-19 08:34:16,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:34:16,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:34:16,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:34:16,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:34:16,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:34:16,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:34:16" (1/1) ... [2022-11-19 08:34:16,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417241ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:16, skipping insertion in model container [2022-11-19 08:34:16,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:34:16" (1/1) ... [2022-11-19 08:34:16,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:34:16,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:34:16,857 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i[1226,1239] [2022-11-19 08:34:16,904 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i[2841,2854] [2022-11-19 08:34:16,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:34:16,926 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:34:16,962 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i[1226,1239] [2022-11-19 08:34:16,989 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i[2841,2854] [2022-11-19 08:34:16,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:34:17,008 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:34:17,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17 WrapperNode [2022-11-19 08:34:17,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:34:17,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:34:17,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:34:17,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:34:17,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,066 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-19 08:34:17,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:34:17,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:34:17,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:34:17,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:34:17,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:34:17,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:34:17,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:34:17,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:34:17,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (1/1) ... [2022-11-19 08:34:17,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:34:17,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:17,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:34:17,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:34:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:34:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-19 08:34:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-19 08:34:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-19 08:34:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-19 08:34:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:34:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:34:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:34:17,305 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:34:17,310 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:34:17,532 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:34:17,608 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:34:17,608 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:34:17,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:34:17 BoogieIcfgContainer [2022-11-19 08:34:17,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:34:17,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:34:17,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:34:17,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:34:17,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:34:16" (1/3) ... [2022-11-19 08:34:17,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763605d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:34:17, skipping insertion in model container [2022-11-19 08:34:17,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:17" (2/3) ... [2022-11-19 08:34:17,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763605d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:34:17, skipping insertion in model container [2022-11-19 08:34:17,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:34:17" (3/3) ... [2022-11-19 08:34:17,625 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_3.i [2022-11-19 08:34:17,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:34:17,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 08:34:17,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:34:17,727 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;@4164360b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:34:17,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 08:34:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:34:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:34:17,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:17,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:34:17,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash -499021812, now seen corresponding path program 1 times [2022-11-19 08:34:17,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:17,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438280765] [2022-11-19 08:34:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:17,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:34:18,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438280765] [2022-11-19 08:34:18,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438280765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:34:18,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:34:18,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:34:18,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514363396] [2022-11-19 08:34:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:34:18,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:34:18,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:18,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:34:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:34:18,412 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:18,544 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-11-19 08:34:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:34:18,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 08:34:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:18,563 INFO L225 Difference]: With dead ends: 38 [2022-11-19 08:34:18,563 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 08:34:18,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:34:18,583 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:18,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:34:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 08:34:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-19 08:34:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:34:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-19 08:34:18,642 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2022-11-19 08:34:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:18,643 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-19 08:34:18,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-19 08:34:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:34:18,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:18,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:18,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:34:18,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1643785969, now seen corresponding path program 1 times [2022-11-19 08:34:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:18,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251747096] [2022-11-19 08:34:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:18,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:18,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:34:18,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510943517] [2022-11-19 08:34:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:18,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:18,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:18,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:34:18,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:34:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:18,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 08:34:18,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:34:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:34:19,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:34:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:34:19,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251747096] [2022-11-19 08:34:19,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:34:19,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510943517] [2022-11-19 08:34:19,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510943517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:34:19,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [9703480] [2022-11-19 08:34:19,532 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 08:34:19,532 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:34:19,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:34:19,544 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:34:19,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:34:19,838 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:34:20,397 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '160#(and (= |ULTIMATE.start_gcd_test_~b#1| 0) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~b#1| 128)) (<= |ULTIMATE.start_gcd_test_#in~a#1| 127) (<= |ULTIMATE.start_main1_~x~0#1| 127) (<= |ULTIMATE.start_gcd_test_#in~b#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (< 0 |ULTIMATE.start_main1_~y~0#1|) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (= (ite (<= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_main1_~y~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 (+ |ULTIMATE.start_main1_~x~0#1| 128)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= |ULTIMATE.start_gcd_test_~a#1| |ULTIMATE.start_gcd_test_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:34:20,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:34:20,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:34:20,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-19 08:34:20,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490907635] [2022-11-19 08:34:20,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:34:20,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 08:34:20,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:34:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 08:34:20,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:34:20,402 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:34:20,770 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-19 08:34:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:34:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 08:34:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:34:20,773 INFO L225 Difference]: With dead ends: 28 [2022-11-19 08:34:20,773 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 08:34:20,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-19 08:34:20,778 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:34:20,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 96 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:34:20,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 08:34:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 08:34:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:34:20,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-19 08:34:20,792 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 7 [2022-11-19 08:34:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:34:20,793 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-19 08:34:20,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:34:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-19 08:34:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:34:20,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:20,795 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-19 08:34:20,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:34:21,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:21,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:21,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:21,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1300293201, now seen corresponding path program 2 times [2022-11-19 08:34:21,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:21,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262893116] [2022-11-19 08:34:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:21,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:34:21,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87419373] [2022-11-19 08:34:21,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:34:21,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:21,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:21,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:34:21,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:34:21,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 08:34:21,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:34:21,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-19 08:34:21,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:34:29,289 WARN L837 $PredicateComparison]: unable to prove that (and (let ((.cse20 (* |c_ULTIMATE.start_gcd_test_~a#1| 255)) (.cse6 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse11 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256))) (let ((.cse17 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse73 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse74 (mod .cse73 256))) (and (not (<= (mod (+ .cse73 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= .cse11 .cse74) (not (<= .cse74 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))))))) (.cse31 (not .cse6)) (.cse24 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse72 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse71 (mod .cse72 256))) (and (= .cse11 .cse71) (not (<= .cse71 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (not (<= (mod (+ .cse72 .cse20) 256) 127))))))) (.cse53 (< |c_ULTIMATE.start_main1_~y~0#1| 0)) (.cse3 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse2 (* |c_ULTIMATE.start_main1_~y~0#1| 255))) (or (and (let ((.cse4 (mod .cse2 256))) (let ((.cse5 (<= .cse4 127))) (or (and (let ((.cse0 (+ .cse4 (- 256)))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse0) 256)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse1 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse0))) (and (not (= .cse1 0)) (= (mod (+ .cse1 .cse2) 256) .cse3) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) (not .cse5) (or (and .cse6 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse8 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse7 (mod .cse8 256))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse7) (<= (mod (+ .cse8 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= .cse7 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse9 256)) (= .cse9 0) (<= (mod (+ .cse9 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse10 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse10 |c_ULTIMATE.start_gcd_test_~a#1|) 256) .cse11) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (not (= .cse10 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod .cse10 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod (+ .cse12 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse12 256)) (= .cse12 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse13 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse14 (mod .cse13 256))) (and (not (<= (mod (+ .cse13 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse14) (<= .cse14 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse16 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse15 (mod .cse16 256))) (and (= .cse11 .cse15) (not (<= .cse15 127)) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (<= (mod (+ .cse16 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127))))) .cse17 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse18 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod .cse18 256) 127)) (= (mod (+ .cse18 |c_ULTIMATE.start_gcd_test_~a#1|) 256) .cse11) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (<= (mod (+ .cse19 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse19 256)) (= .cse19 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse22 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse21 (mod .cse22 256))) (and (= .cse11 .cse21) (not (<= .cse21 127)) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (<= (mod (+ .cse22 .cse20) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse23 256)) (= .cse23 0) (not (<= (mod (+ .cse23 .cse20) 256) 127))))) .cse24 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= (mod (+ .cse25 .cse20) 256) .cse11) (not (= .cse25 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0) (<= (mod .cse25 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod .cse26 256) 127)) (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= (mod (+ .cse26 .cse20) 256) .cse11) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse28 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse27 (mod .cse28 256))) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse27) (not (<= (mod (+ .cse28 .cse20) 256) 127)) (<= .cse27 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse29 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse30 (mod .cse29 256))) (and (<= .cse4 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (<= (mod (+ .cse29 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse30) (<= .cse30 127)))))) .cse31))) (and (not (= .cse4 0)) (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse32 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse32 256)) (= .cse32 0) (not (<= (mod (+ .cse32 .cse20) 256) 127)) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (mod (+ .cse33 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse33 256)) (= .cse33 0) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse35 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse34 (mod .cse35 256))) (and (= .cse11 .cse34) (not (<= .cse34 127)) (not (<= (mod (+ .cse35 .cse20) 256) 127)) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse37 (mod .cse36 256))) (and (<= (mod (+ .cse36 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse37) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse37 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse38 (mod .cse39 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse38) (not (<= (mod (+ .cse39 .cse20) 256) 127)) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse38 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse41 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse40 (mod .cse41 256))) (and (= .cse11 .cse40) (not (<= .cse40 127)) (<= (mod (+ .cse41 .cse20) 256) 127) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|)))))) .cse31) (and .cse6 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse43 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse42 (mod .cse43 256))) (and (= .cse11 .cse42) (not (<= .cse42 127)) (<= (mod (+ .cse43 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse44 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod (+ .cse44 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse44 256)) (= .cse44 0) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse45 (mod .cse46 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse45) (<= (mod (+ .cse46 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse45 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse47 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse48 (mod .cse47 256))) (and (not (<= (mod (+ .cse47 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse48) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse48 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse49 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse50 (mod .cse49 256))) (and (not (<= (mod (+ .cse49 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= .cse11 .cse50) (not (<= .cse50 127)) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse51 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse51 256)) (= .cse51 0) (<= (mod (+ .cse51 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= .cse4 |v_ULTIMATE.start_gcd_test_~a#1_26|))))))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse4) 256)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse52 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse4))) (and (= .cse3 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse52) 256)) (not (= .cse52 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0))))) .cse5)))) .cse53) (and (or (and .cse6 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse55 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse54 (mod .cse55 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse54) (<= (mod (+ .cse55 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse54 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse57 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse56 (mod .cse57 256))) (and (= .cse11 .cse56) (not (<= .cse56 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (<= (mod (+ .cse57 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse58 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse59 (mod .cse58 256))) (and (not (<= (mod (+ .cse58 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse59) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse59 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse60 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (<= (mod (+ .cse60 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse60 256)) (= .cse60 0) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|)))) .cse17 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse61 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse61 256)) (= .cse61 0) (<= (mod (+ .cse61 |c_ULTIMATE.start_gcd_test_~a#1|) 256) 127) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|)))))) (and .cse31 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse62 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (mod (+ .cse62 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse62 256)) (= .cse62 0) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse64 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse63 (mod .cse64 256))) (and (= .cse11 .cse63) (not (<= .cse63 127)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (<= (mod (+ .cse64 .cse20) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse65 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse66 (mod .cse65 256))) (and (<= (mod (+ .cse65 .cse20) 256) 127) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse66) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse66 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse68 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse67 (mod .cse68 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| .cse67) (not (<= (mod (+ .cse68 .cse20) 256) 127)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (<= .cse67 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse69 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse69 256)) (= .cse69 0) (not (<= (mod (+ .cse69 .cse20) 256) 127)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|)))) .cse24))) (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (not .cse53) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse70 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= .cse3 (mod (+ .cse70 .cse2) 256)) (not (= .cse70 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|) 256))))))))) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-11-19 08:35:23,562 WARN L837 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (let ((.cse10 (* |c_ULTIMATE.start_main1_~y~0#1| 255))) (let ((.cse6 (mod .cse10 256))) (let ((.cse24 (<= .cse6 127)) (.cse13 (< |c_ULTIMATE.start_main1_~y~0#1| 0)) (.cse0 (< |c_ULTIMATE.start_gcd_test_~a#1| 0))) (let ((.cse16 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse33 (not .cse0)) (.cse19 (not (= .cse6 0))) (.cse28 (not (= |c_ULTIMATE.start_main1_~y~0#1| 0))) (.cse32 (not .cse13)) (.cse3 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse7 (+ .cse6 (- 256))) (.cse14 (not .cse24))) (or (and .cse0 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse4 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse2 (mod .cse4 256))) (let ((.cse1 (mod .cse2 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse1 0) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse1 256)) (not (= .cse2 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse5 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse2))) (and (= .cse3 (mod (+ (* .cse4 255) .cse5) 256)) (not (= .cse5 0)) (<= .cse6 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse11 (+ (mod (+ .cse9 .cse10) 256) (- 256)))) (let ((.cse12 (mod .cse11 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse8 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse11))) (and (not (= .cse8 0)) (<= .cse6 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= .cse3 (mod (+ .cse9 .cse10 .cse8) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))) (= (mod .cse12 256) |c_ULTIMATE.start_gcd_test_~b#1|) (not (= .cse9 0)) (= .cse12 0) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0))))))) .cse13 .cse14) (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse17 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse18 (+ (mod (+ .cse17 .cse10) 256) (- 256)))) (let ((.cse15 (mod .cse18 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse15 |c_ULTIMATE.start_gcd_test_~a#1|) 256) .cse16) (not (= .cse17 0)) (not (= .cse15 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (<= .cse6 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (= .cse3 (mod (+ .cse17 .cse10 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse18)) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0))) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) .cse13 .cse14) (and (let ((.cse22 (* |c_ULTIMATE.start_gcd_test_~a#1| 255))) (or (and .cse13 (or (and .cse19 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse6))) (let ((.cse20 (+ (- 256) (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse23) 256)))) (let ((.cse21 (mod .cse20 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse20) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= .cse6 |v_ULTIMATE.start_gcd_test_~a#1_26|))) (= (mod (+ .cse21 .cse22) 256) .cse16) (not (= .cse21 0)) (not (= .cse23 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) .cse24) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse27 (+ (mod (+ .cse26 .cse10) 256) (- 256)))) (let ((.cse25 (mod .cse27 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse16 (mod (+ .cse25 .cse22) 256)) (not (= .cse26 0)) (not (= .cse25 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse27) 256) |c_ULTIMATE.start_gcd_test_~a#1|))) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) .cse14))) (and .cse28 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse30 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse31 (+ (- 256) (mod (+ .cse30 .cse10) 256)))) (let ((.cse29 (mod .cse31 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse16 (mod (+ .cse22 .cse29) 256)) (not (= .cse29 0)) (not (= .cse30 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse31) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|))) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) .cse32))) .cse33) (and (or (and .cse28 .cse32 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse34 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|) 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse34) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|))) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse34 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (not (= .cse34 0)))))) (and (or (and .cse14 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse35 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7) 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse35) 256)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse35 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (not (= .cse35 0)))))) (and .cse19 .cse24 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse36 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse6) 256))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse36) 256)) (= (mod (mod .cse36 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (not (= .cse36 0)) (<= .cse6 |v_ULTIMATE.start_gcd_test_~a#1_26|)))))) .cse13)) .cse33) (and .cse33 (or (and .cse13 (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse38 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse39 (+ (mod (+ .cse38 .cse10) 256) (- 256)))) (let ((.cse37 (mod .cse39 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod .cse37 256) |c_ULTIMATE.start_gcd_test_~b#1|) (not (= .cse38 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse39) 256) |c_ULTIMATE.start_gcd_test_~a#1|))) (= .cse37 0) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse41 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7) 256))) (let ((.cse40 (mod .cse41 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse40 0) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse41) 256)) (not (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse40 256)) (not (= .cse41 0))))))) .cse14) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse44 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse6))) (let ((.cse42 (+ (- 256) (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse44) 256)))) (let ((.cse43 (mod .cse42 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse42) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= .cse6 |v_ULTIMATE.start_gcd_test_~a#1_26|))) (= .cse43 0) (not (= .cse44 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse43 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse45 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse6) 256))) (let ((.cse46 (mod .cse45 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse45) 256)) (= (mod .cse46 256) |c_ULTIMATE.start_gcd_test_~b#1|) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (not (= .cse45 0)) (= .cse46 0) (<= .cse6 |v_ULTIMATE.start_gcd_test_~a#1_26|)))))) .cse19 .cse24))) (and .cse28 .cse32 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int) (|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse49 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse47 (+ (- 256) (mod (+ .cse49 .cse10) 256)))) (let ((.cse48 (mod .cse47 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse47) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (= .cse48 0) (not (= .cse49 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse48 256)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|) (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse50 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_25| |c_ULTIMATE.start_main1_~y~0#1|) 256))) (let ((.cse51 (mod .cse50 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse50) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_26|))) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse51 256)) (= .cse51 0) (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (not (= .cse50 0)))))))))) (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_25| Int)) (let ((.cse53 (mod |v_ULTIMATE.start_gcd_test_~a#1_25| .cse7))) (let ((.cse52 (mod .cse53 256))) (and (not (< |v_ULTIMATE.start_gcd_test_~a#1_25| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse52 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (not (= .cse52 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_26| Int)) (let ((.cse54 (mod |v_ULTIMATE.start_gcd_test_~a#1_26| .cse52))) (and (= .cse3 (mod (+ (* .cse53 255) .cse54) 256)) (not (= .cse54 0)) (<= .cse6 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_26|)) (< |v_ULTIMATE.start_gcd_test_~a#1_26| 0)))))))) .cse13 .cse14)))))) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-11-19 08:36:52,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-19 08:36:52,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:52,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262893116] [2022-11-19 08:36:52,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:36:52,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87419373] [2022-11-19 08:36:52,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. [2022-11-19 08:36:52,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [823989473] [2022-11-19 08:36:52,240 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 08:36:52,240 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:36:52,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:36:52,241 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:36:52,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:36:52,244 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:273) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:221) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 44 more [2022-11-19 08:36:52,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:52,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-19 08:36:52,259 ERROR L170 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2022-11-19 08:36:52,260 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-19 08:36:52,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 08:36:52,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 08:36:52,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:36:52,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:52,481 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-19 08:36:52,484 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:36:52,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:36:52 BoogieIcfgContainer [2022-11-19 08:36:52,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:36:52,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:36:52,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:36:52,505 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:36:52,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:34:17" (3/4) ... [2022-11-19 08:36:52,512 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 08:36:52,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:36:52,513 INFO L158 Benchmark]: Toolchain (without parser) took 155974.44ms. Allocated memory was 121.6MB in the beginning and 262.1MB in the end (delta: 140.5MB). Free memory was 90.5MB in the beginning and 215.2MB in the end (delta: -124.7MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2022-11-19 08:36:52,514 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 45.5MB in the beginning and 45.5MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:52,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 458.16ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 96.5MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:36:52,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.48ms. Allocated memory is still 121.6MB. Free memory was 96.5MB in the beginning and 94.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:52,519 INFO L158 Benchmark]: Boogie Preprocessor took 46.82ms. Allocated memory is still 121.6MB. Free memory was 94.8MB in the beginning and 93.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:36:52,520 INFO L158 Benchmark]: RCFGBuilder took 497.46ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 78.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 08:36:52,520 INFO L158 Benchmark]: TraceAbstraction took 154887.44ms. Allocated memory was 121.6MB in the beginning and 262.1MB in the end (delta: 140.5MB). Free memory was 77.2MB in the beginning and 216.2MB in the end (delta: -139.0MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-11-19 08:36:52,521 INFO L158 Benchmark]: Witness Printer took 9.15ms. Allocated memory is still 262.1MB. Free memory was 216.2MB in the beginning and 215.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:36:52,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 45.5MB in the beginning and 45.5MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 458.16ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 96.5MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.48ms. Allocated memory is still 121.6MB. Free memory was 96.5MB in the beginning and 94.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.82ms. Allocated memory is still 121.6MB. Free memory was 94.8MB in the beginning and 93.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.46ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 78.1MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 154887.44ms. Allocated memory was 121.6MB in the beginning and 262.1MB in the end (delta: 140.5MB). Free memory was 77.2MB in the beginning and 216.2MB in the end (delta: -139.0MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Witness Printer took 9.15ms. Allocated memory is still 262.1MB. Free memory was 216.2MB in the beginning and 215.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L108] COND TRUE __VERIFIER_nondet_int() [L109] CALL main1() [L49] signed char x = __VERIFIER_nondet_char(); [L50] signed char y = __VERIFIER_nondet_char(); [L51] signed char g; [L53] CALL, EXPR gcd_test(x, y) [L33] signed char t; [L35] COND TRUE a < (signed char)0 [L35] a = -a [L36] COND FALSE !(b < (signed char)0) [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND TRUE b != (signed char)0 [L39] t = b [L40] b = a % b [L41] a = t [L38] COND FALSE !(b != (signed char)0) [L43] return a; [L53] RET, EXPR gcd_test(x, y) [L53] g = gcd_test(x, y) [L55] COND TRUE y > (signed char)0 [L56] CALL __VERIFIER_assert(y >= g) [L26] COND TRUE !(cond) [L27] reach_error() - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 154.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 32 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 152.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 166 SizeOfPredicates, 7 NumberOfNonLiveVariables, 168 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6c5808fcdfedd93e514ea4bc51242b78bf5dcc9e332c7faf3dfcc4d6de127e2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:36:54,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:36:54,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:36:55,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:36:55,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:36:55,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:36:55,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:36:55,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:36:55,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:36:55,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:36:55,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:36:55,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:36:55,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:36:55,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:36:55,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:36:55,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:36:55,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:36:55,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:36:55,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:36:55,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:36:55,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:36:55,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:36:55,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:36:55,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:36:55,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:36:55,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:36:55,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:36:55,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:36:55,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:36:55,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:36:55,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:36:55,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:36:55,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:36:55,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:36:55,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:36:55,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:36:55,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:36:55,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:36:55,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:36:55,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:36:55,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:36:55,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 08:36:55,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:36:55,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:36:55,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:36:55,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:36:55,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:36:55,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:36:55,207 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:36:55,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:36:55,208 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:36:55,208 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:36:55,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:36:55,210 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:36:55,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:36:55,212 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:36:55,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:36:55,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:36:55,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:36:55,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:36:55,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:36:55,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:36:55,214 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:36:55,214 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:36:55,215 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:36:55,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:36:55,215 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:36:55,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:36:55,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:36:55,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:36:55,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:36:55,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:55,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:36:55,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:36:55,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:36:55,218 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:36:55,219 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:36:55,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:36:55,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:36:55,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:36:55,220 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c5808fcdfedd93e514ea4bc51242b78bf5dcc9e332c7faf3dfcc4d6de127e2 [2022-11-19 08:36:55,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:36:55,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:36:55,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:36:55,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:36:55,700 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:36:55,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/gcd_2+newton_2_3.i [2022-11-19 08:36:55,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data/ba87492a8/fd957ea5c24d48b7849ded4c7c1f3d5a/FLAGd204729dc [2022-11-19 08:36:56,323 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:36:56,324 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i [2022-11-19 08:36:56,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data/ba87492a8/fd957ea5c24d48b7849ded4c7c1f3d5a/FLAGd204729dc [2022-11-19 08:36:56,671 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/data/ba87492a8/fd957ea5c24d48b7849ded4c7c1f3d5a [2022-11-19 08:36:56,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:36:56,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:36:56,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:56,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:36:56,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:36:56,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:56" (1/1) ... [2022-11-19 08:36:56,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c62b6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:56, skipping insertion in model container [2022-11-19 08:36:56,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:56" (1/1) ... [2022-11-19 08:36:56,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:36:56,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:36:56,993 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i[1226,1239] [2022-11-19 08:36:57,049 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i[2841,2854] [2022-11-19 08:36:57,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:57,117 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:36:57,149 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i[1226,1239] [2022-11-19 08:36:57,174 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/sv-benchmarks/c/combinations/gcd_2+newton_2_3.i[2841,2854] [2022-11-19 08:36:57,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:57,202 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:36:57,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57 WrapperNode [2022-11-19 08:36:57,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:57,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:57,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:36:57,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:36:57,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,278 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2022-11-19 08:36:57,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:57,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:36:57,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:36:57,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:36:57,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:36:57,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:36:57,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:36:57,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:36:57,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (1/1) ... [2022-11-19 08:36:57,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:57,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:36:57,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:36:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:36:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 08:36:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-19 08:36:57,445 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-19 08:36:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-19 08:36:57,445 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-19 08:36:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:36:57,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:36:57,579 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:36:57,581 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:37:05,863 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:37:05,871 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:37:05,871 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:37:05,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:37:05 BoogieIcfgContainer [2022-11-19 08:37:05,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:37:05,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:37:05,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:37:05,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:37:05,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:36:56" (1/3) ... [2022-11-19 08:37:05,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79883317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:37:05, skipping insertion in model container [2022-11-19 08:37:05,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:57" (2/3) ... [2022-11-19 08:37:05,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79883317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:37:05, skipping insertion in model container [2022-11-19 08:37:05,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:37:05" (3/3) ... [2022-11-19 08:37:05,897 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_3.i [2022-11-19 08:37:05,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:37:05,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 08:37:06,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:37:06,040 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;@10007e99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:37:06,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 08:37:06,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:37:06,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:37:06,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:06,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:06,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-19 08:37:06,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:37:06,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353583637] [2022-11-19 08:37:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:06,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:37:06,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:37:06,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:37:06,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 08:37:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:06,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:37:06,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:06,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:37:06,463 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:37:06,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353583637] [2022-11-19 08:37:06,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353583637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:06,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:06,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:37:06,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824858587] [2022-11-19 08:37:06,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:06,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:37:06,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:37:06,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:37:06,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:37:06,524 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:06,580 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-11-19 08:37:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:37:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 08:37:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:06,594 INFO L225 Difference]: With dead ends: 68 [2022-11-19 08:37:06,595 INFO L226 Difference]: Without dead ends: 30 [2022-11-19 08:37:06,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:37:06,604 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:06,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-19 08:37:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-19 08:37:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-19 08:37:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:37:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-19 08:37:06,668 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2022-11-19 08:37:06,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:06,669 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-19 08:37:06,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:06,670 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-19 08:37:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:37:06,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:06,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:06,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:37:06,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:37:06,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:06,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:06,896 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-19 08:37:06,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:37:06,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717798765] [2022-11-19 08:37:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:06,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:37:06,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:37:06,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:37:06,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 08:37:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:37:06,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:07,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:37:07,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:37:07,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717798765] [2022-11-19 08:37:07,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717798765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:07,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:07,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:37:07,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808014563] [2022-11-19 08:37:07,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:07,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:37:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:37:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:37:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:37:07,136 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:07,353 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-19 08:37:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:37:07,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 08:37:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:07,360 INFO L225 Difference]: With dead ends: 37 [2022-11-19 08:37:07,360 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 08:37:07,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:07,361 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:07,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:37:07,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 08:37:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-19 08:37:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:37:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-19 08:37:07,369 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2022-11-19 08:37:07,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:07,370 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-19 08:37:07,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:07,370 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-19 08:37:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:37:07,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:07,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:07,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:37:07,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:37:07,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-19 08:37:07,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:37:07,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879080286] [2022-11-19 08:37:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:07,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:37:07,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:37:07,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:37:07,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 08:37:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:07,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:37:07,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:37:07,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:37:07,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:37:07,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879080286] [2022-11-19 08:37:07,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879080286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:07,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:07,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:37:07,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181210013] [2022-11-19 08:37:07,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:07,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:37:07,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:37:07,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:37:07,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:37:07,881 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:07,997 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-19 08:37:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:37:08,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 08:37:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:08,001 INFO L225 Difference]: With dead ends: 38 [2022-11-19 08:37:08,001 INFO L226 Difference]: Without dead ends: 30 [2022-11-19 08:37:08,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:37:08,003 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:08,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:37:08,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-19 08:37:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-19 08:37:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:37:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-19 08:37:08,011 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2022-11-19 08:37:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:08,011 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-19 08:37:08,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-19 08:37:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:37:08,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:08,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:08,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:37:08,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:37:08,231 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-19 08:37:08,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:37:08,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152656285] [2022-11-19 08:37:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:08,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:37:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:37:08,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:37:08,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 08:37:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:08,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 08:37:08,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:09,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:37:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:10,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:37:10,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152656285] [2022-11-19 08:37:10,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152656285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:37:10,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145142049] [2022-11-19 08:37:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:10,085 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:37:10,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:37:10,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:37:10,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-19 08:37:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:10,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 08:37:10,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:10,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:37:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:10,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145142049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:37:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100829474] [2022-11-19 08:37:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:10,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:37:10,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:37:10,982 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:37:11,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:37:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:11,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 08:37:11,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:37:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:11,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:37:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:37:12,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100829474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:37:12,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:37:12,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 7] total 18 [2022-11-19 08:37:12,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923198208] [2022-11-19 08:37:12,418 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:37:12,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 08:37:12,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:37:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 08:37:12,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-19 08:37:12,429 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:18,087 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-11-19 08:37:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 08:37:18,089 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 08:37:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:18,090 INFO L225 Difference]: With dead ends: 43 [2022-11-19 08:37:18,090 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 08:37:18,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2022-11-19 08:37:18,092 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 65 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:18,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 159 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-19 08:37:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 08:37:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 08:37:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:37:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-19 08:37:18,098 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2022-11-19 08:37:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:18,098 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-19 08:37:18,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-19 08:37:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 08:37:18,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:18,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:18,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:37:18,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:37:18,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 08:37:18,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:37:18,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1535073882, now seen corresponding path program 1 times [2022-11-19 08:37:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:37:18,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436550977] [2022-11-19 08:37:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:37:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:37:18,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:37:18,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d523d524-ff69-4652-9500-672bdc716c28/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process