./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41039e1ca02f0c1a8ce2142160f9ec0f4ca3178e082edea8dc4d2cb9edc06efd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:03:05,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:03:05,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:03:05,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:03:05,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:03:05,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:03:05,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:03:05,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:03:05,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:03:05,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:03:05,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:03:05,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:03:05,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:03:05,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:03:05,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:03:05,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:03:05,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:03:05,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:03:05,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:03:05,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:03:05,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:03:05,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:03:05,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:03:05,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:03:05,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:03:05,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:03:05,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:03:05,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:03:05,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:03:05,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:03:05,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:03:05,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:03:05,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:03:05,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:03:05,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:03:05,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:03:05,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:03:05,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:03:05,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:03:05,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:03:05,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:03:05,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:03:05,657 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:03:05,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:03:05,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:03:05,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:03:05,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:03:05,659 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:03:05,659 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:03:05,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:03:05,660 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:03:05,660 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:03:05,660 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:03:05,660 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:03:05,660 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:03:05,661 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:03:05,661 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:03:05,661 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:03:05,661 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:03:05,661 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:03:05,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:03:05,662 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:03:05,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:03:05,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:03:05,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:03:05,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:03:05,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:03:05,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:03:05,664 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:03:05,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:03:05,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:03:05,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:03:05,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:03:05,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:03:05,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:03:05,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:03:05,665 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:03:05,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:03:05,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:03:05,666 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:03:05,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:03:05,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:03:05,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:03:05,667 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_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41039e1ca02f0c1a8ce2142160f9ec0f4ca3178e082edea8dc4d2cb9edc06efd [2022-12-14 05:03:05,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:03:05,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:03:05,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:03:05,879 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:03:05,879 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:03:05,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/gcd_3+newton_3_5.i [2022-12-14 05:03:08,434 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:03:08,562 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:03:08,562 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i [2022-12-14 05:03:08,567 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/data/d617a40d8/e8eefb0c658f4ebc8b6c388aff0c93ca/FLAG7e5ad3477 [2022-12-14 05:03:08,990 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/data/d617a40d8/e8eefb0c658f4ebc8b6c388aff0c93ca [2022-12-14 05:03:08,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:03:08,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:03:08,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:03:08,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:03:08,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:03:08,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:03:08" (1/1) ... [2022-12-14 05:03:09,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ab983b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:08, skipping insertion in model container [2022-12-14 05:03:09,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:03:08" (1/1) ... [2022-12-14 05:03:09,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:03:09,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:03:09,121 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[1226,1239] [2022-12-14 05:03:09,137 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[2862,2875] [2022-12-14 05:03:09,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:03:09,146 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:03:09,155 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[1226,1239] [2022-12-14 05:03:09,161 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[2862,2875] [2022-12-14 05:03:09,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:03:09,172 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:03:09,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09 WrapperNode [2022-12-14 05:03:09,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:03:09,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:03:09,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:03:09,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:03:09,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,200 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-12-14 05:03:09,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:03:09,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:03:09,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:03:09,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:03:09,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:03:09,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:03:09,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:03:09,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:03:09,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (1/1) ... [2022-12-14 05:03:09,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:03:09,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:03:09,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:03:09,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:03:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:03:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-14 05:03:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-14 05:03:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-14 05:03:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-14 05:03:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:03:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:03:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:03:09,346 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:03:09,348 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:03:09,484 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:03:09,543 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:03:09,543 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:03:09,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:03:09 BoogieIcfgContainer [2022-12-14 05:03:09,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:03:09,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:03:09,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:03:09,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:03:09,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:03:08" (1/3) ... [2022-12-14 05:03:09,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda186c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:03:09, skipping insertion in model container [2022-12-14 05:03:09,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:09" (2/3) ... [2022-12-14 05:03:09,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda186c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:03:09, skipping insertion in model container [2022-12-14 05:03:09,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:03:09" (3/3) ... [2022-12-14 05:03:09,555 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_5.i [2022-12-14 05:03:09,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:03:09,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 05:03:09,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:03:09,613 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;@155a596a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:03:09,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 05:03:09,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:03:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:03:09,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:03:09,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:03:09,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:03:09,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:03:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash -291944571, now seen corresponding path program 1 times [2022-12-14 05:03:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:03:09,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961010949] [2022-12-14 05:03:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:03:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:03:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:03:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:03:10,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:03:10,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961010949] [2022-12-14 05:03:10,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961010949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:03:10,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:03:10,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:03:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521410681] [2022-12-14 05:03:10,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:03:10,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:03:10,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:03:10,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:03:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:03:10,079 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-12-14 05:03:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:03:10,182 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-12-14 05:03:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:03:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 [2022-12-14 05:03:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:03:10,190 INFO L225 Difference]: With dead ends: 48 [2022-12-14 05:03:10,190 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 05:03:10,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:03:10,194 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:03:10,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 84 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:03:10,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 05:03:10,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 05:03:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:03:10,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-12-14 05:03:10,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2022-12-14 05:03:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:03:10,222 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-12-14 05:03:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-12-14 05:03:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-14 05:03:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 05:03:10,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:03:10,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:03:10,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:03:10,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:03:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:03:10,225 INFO L85 PathProgramCache]: Analyzing trace with hash -533010262, now seen corresponding path program 1 times [2022-12-14 05:03:10,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:03:10,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70020853] [2022-12-14 05:03:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:03:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:03:10,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 05:03:10,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101795939] [2022-12-14 05:03:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:03:10,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:03:10,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:03:10,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:03:10,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:03:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:03:10,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 05:03:10,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:03:17,337 WARN L859 $PredicateComparison]: unable to prove that (or (and (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |ULTIMATE.start_gcd_test_#res#1|) 256) 0) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (not (= |ULTIMATE.start_gcd_test_#res#1| 0)))) (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (and (< |c_ULTIMATE.start_main1_~x~0#1| 0) (let ((.cse1 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse0 (<= .cse1 127))) (or (and (not .cse0) (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= 0 (mod (+ .cse1 (- 256)) |ULTIMATE.start_gcd_test_#res#1|)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (not (= |ULTIMATE.start_gcd_test_#res#1| 0))))) (and .cse0 (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= (mod (mod .cse1 |ULTIMATE.start_gcd_test_#res#1|) 256) 0) (not (= |ULTIMATE.start_gcd_test_#res#1| 0)))))))))) is different from true [2022-12-14 05:03:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:03:17,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:03:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:03:20,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:03:20,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70020853] [2022-12-14 05:03:20,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 05:03:20,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101795939] [2022-12-14 05:03:20,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101795939] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:03:20,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1105006995] [2022-12-14 05:03:20,903 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:03:20,903 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:03:20,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:03:20,909 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:03:20,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:03:21,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:03:21,999 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '188#(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) (< 0 |ULTIMATE.start_main1_~x~0#1|) (<= |ULTIMATE.start_gcd_test_#in~b#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ |ULTIMATE.start_gcd_test_#in~a#1| 128)) (= (ite (<= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_main1_~x~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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|) (<= |ULTIMATE.start_main1_~y~0#1| 127) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main1_~y~0#1| 128)) (= |#NULL.base| 0))' at error location [2022-12-14 05:03:21,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:03:21,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:03:22,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-14 05:03:22,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919969753] [2022-12-14 05:03:22,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 05:03:22,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:03:22,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:03:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:03:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=146, Unknown=2, NotChecked=24, Total=210 [2022-12-14 05:03:22,003 INFO L87 Difference]: Start difference. First operand 24 states and 28 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) [2022-12-14 05:03:24,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 05:03:26,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 05:03:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:03:49,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-12-14 05:03:49,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=38, Invalid=146, Unknown=2, NotChecked=24, Total=210 [2022-12-14 05:03:49,955 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:03:49,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 1 Unknown, 6 Unchecked, 5.5s Time] [2022-12-14 05:03:49,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-14 05:03:50,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:03:50,158 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:391) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 55 more [2022-12-14 05:03:50,167 INFO L158 Benchmark]: Toolchain (without parser) took 41172.42ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 91.5MB in the beginning and 93.6MB in the end (delta: -2.1MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-12-14 05:03:50,168 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:03:50,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.44ms. Allocated memory is still 130.0MB. Free memory was 91.5MB in the beginning and 79.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:03:50,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.47ms. Allocated memory is still 130.0MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:03:50,172 INFO L158 Benchmark]: Boogie Preprocessor took 17.79ms. Allocated memory is still 130.0MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:03:50,174 INFO L158 Benchmark]: RCFGBuilder took 327.08ms. Allocated memory is still 130.0MB. Free memory was 76.8MB in the beginning and 61.3MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 05:03:50,175 INFO L158 Benchmark]: TraceAbstraction took 40617.18ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 60.4MB in the beginning and 93.6MB in the end (delta: -33.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:03:50,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.44ms. Allocated memory is still 130.0MB. Free memory was 91.5MB in the beginning and 79.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.47ms. Allocated memory is still 130.0MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.79ms. Allocated memory is still 130.0MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.08ms. Allocated memory is still 130.0MB. Free memory was 76.8MB in the beginning and 61.3MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 40617.18ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 60.4MB in the beginning and 93.6MB in the end (delta: -33.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41039e1ca02f0c1a8ce2142160f9ec0f4ca3178e082edea8dc4d2cb9edc06efd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:03:51,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:03:51,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:03:51,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:03:51,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:03:51,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:03:51,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:03:51,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:03:51,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:03:51,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:03:51,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:03:51,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:03:51,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:03:51,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:03:51,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:03:51,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:03:51,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:03:51,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:03:51,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:03:51,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:03:51,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:03:51,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:03:51,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:03:51,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:03:51,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:03:51,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:03:51,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:03:51,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:03:51,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:03:51,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:03:51,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:03:51,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:03:51,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:03:51,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:03:51,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:03:51,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:03:51,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:03:51,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:03:51,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:03:51,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:03:51,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:03:51,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 05:03:51,586 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:03:51,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:03:51,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:03:51,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:03:51,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:03:51,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:03:51,588 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:03:51,588 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:03:51,588 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:03:51,589 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:03:51,589 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:03:51,589 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:03:51,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:03:51,590 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:03:51,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:03:51,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:03:51,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:03:51,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:03:51,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:03:51,591 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:03:51,591 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:03:51,591 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:03:51,591 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:03:51,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:03:51,591 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:03:51,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:03:51,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:03:51,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:03:51,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:03:51,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:03:51,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:03:51,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:03:51,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:03:51,593 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:03:51,593 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:03:51,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:03:51,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:03:51,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:03:51,593 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_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41039e1ca02f0c1a8ce2142160f9ec0f4ca3178e082edea8dc4d2cb9edc06efd [2022-12-14 05:03:51,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:03:51,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:03:51,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:03:51,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:03:51,824 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:03:51,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/gcd_3+newton_3_5.i [2022-12-14 05:03:54,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:03:54,479 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:03:54,480 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i [2022-12-14 05:03:54,485 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/data/590c8dc09/25e7b834ed514c1fa1e50d1e5ec57143/FLAG9a3e7e181 [2022-12-14 05:03:54,495 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/data/590c8dc09/25e7b834ed514c1fa1e50d1e5ec57143 [2022-12-14 05:03:54,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:03:54,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:03:54,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:03:54,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:03:54,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:03:54,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76688b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54, skipping insertion in model container [2022-12-14 05:03:54,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:03:54,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:03:54,624 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[1226,1239] [2022-12-14 05:03:54,641 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[2862,2875] [2022-12-14 05:03:54,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:03:54,652 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:03:54,662 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[1226,1239] [2022-12-14 05:03:54,677 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[2862,2875] [2022-12-14 05:03:54,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:03:54,693 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:03:54,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54 WrapperNode [2022-12-14 05:03:54,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:03:54,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:03:54,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:03:54,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:03:54,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,734 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-12-14 05:03:54,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:03:54,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:03:54,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:03:54,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:03:54,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:03:54,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:03:54,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:03:54,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:03:54,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (1/1) ... [2022-12-14 05:03:54,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:03:54,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:03:54,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:03:54,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:03:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:03:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 05:03:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-14 05:03:54,822 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-14 05:03:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-14 05:03:54,823 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-14 05:03:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:03:54,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:03:54,879 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:03:54,880 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:04:05,325 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:04:05,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:04:05,335 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:04:05,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:04:05 BoogieIcfgContainer [2022-12-14 05:04:05,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:04:05,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:04:05,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:04:05,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:04:05,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:03:54" (1/3) ... [2022-12-14 05:04:05,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78261386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:04:05, skipping insertion in model container [2022-12-14 05:04:05,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:54" (2/3) ... [2022-12-14 05:04:05,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78261386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:04:05, skipping insertion in model container [2022-12-14 05:04:05,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:04:05" (3/3) ... [2022-12-14 05:04:05,343 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_5.i [2022-12-14 05:04:05,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:04:05,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 05:04:05,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:04:05,394 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;@7336fac7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:04:05,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 05:04:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:04:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:04:05,402 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:04:05,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:04:05,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:04:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:04:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-12-14 05:04:05,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:04:05,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786709205] [2022-12-14 05:04:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:04:05,415 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 [2022-12-14 05:04:05,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:04:05,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:04:05,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:04:05,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:04:05,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:04:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:04:05,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:04:05,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:04:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786709205] [2022-12-14 05:04:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786709205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:04:05,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:04:05,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:04:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970555466] [2022-12-14 05:04:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:04:05,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:04:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:04:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:04:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:04:05,612 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2022-12-14 05:04:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:04:05,684 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-12-14 05:04:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:04:05,686 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 [2022-12-14 05:04:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:04:05,690 INFO L225 Difference]: With dead ends: 74 [2022-12-14 05:04:05,690 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 05:04:05,692 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 [2022-12-14 05:04:05,695 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:04:05,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:04:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 05:04:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-12-14 05:04:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:04:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-12-14 05:04:05,722 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-12-14 05:04:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:04:05,722 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-12-14 05:04:05,722 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) [2022-12-14 05:04:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-12-14 05:04:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:04:05,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:04:05,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:04:05,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:05,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:05,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:04:05,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:04:05,925 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-12-14 05:04:05,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:04:05,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418775234] [2022-12-14 05:04:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:04:05,925 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 [2022-12-14 05:04:05,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:04:05,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:04:05,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:04:05,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:04:05,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:04:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:04:06,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:04:06,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:04:06,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418775234] [2022-12-14 05:04:06,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418775234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:04:06,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:04:06,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:04:06,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217550221] [2022-12-14 05:04:06,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:04:06,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:04:06,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:04:06,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:04:06,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:04:06,091 INFO L87 Difference]: Start difference. First operand 33 states and 39 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) [2022-12-14 05:04:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:04:06,207 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-12-14 05:04:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:04:06,208 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 [2022-12-14 05:04:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:04:06,209 INFO L225 Difference]: With dead ends: 49 [2022-12-14 05:04:06,209 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 05:04:06,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:04:06,211 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:04:06,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 103 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:04:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 05:04:06,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-12-14 05:04:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:04:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-12-14 05:04:06,220 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-12-14 05:04:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:04:06,220 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-12-14 05:04:06,221 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) [2022-12-14 05:04:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-12-14 05:04:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:04:06,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:04:06,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:04:06,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 05:04:06,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:06,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:04:06,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:04:06,426 INFO L85 PathProgramCache]: Analyzing trace with hash -743724587, now seen corresponding path program 1 times [2022-12-14 05:04:06,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:04:06,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661044476] [2022-12-14 05:04:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:04:06,428 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 [2022-12-14 05:04:06,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:04:06,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:04:06,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:04:06,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:04:06,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:04:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:04:06,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:04:06,911 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:04:06,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661044476] [2022-12-14 05:04:06,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661044476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:04:06,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:04:06,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:04:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682412892] [2022-12-14 05:04:06,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:04:06,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:04:06,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:04:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:04:06,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:04:06,914 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-12-14 05:04:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:04:07,483 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-12-14 05:04:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:04:07,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 [2022-12-14 05:04:07,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:04:07,484 INFO L225 Difference]: With dead ends: 40 [2022-12-14 05:04:07,484 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 05:04:07,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:04:07,485 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:04:07,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 185 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:04:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 05:04:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-12-14 05:04:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:04:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-12-14 05:04:07,492 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-12-14 05:04:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:04:07,492 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-12-14 05:04:07,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-12-14 05:04:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-12-14 05:04:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 05:04:07,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:04:07,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:04:07,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:07,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:07,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:04:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:04:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-12-14 05:04:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:04:07,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371227959] [2022-12-14 05:04:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:04:07,699 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 [2022-12-14 05:04:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:04:07,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:04:07,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:04:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:04:07,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 05:04:07,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:04:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:04:10,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:04:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:04:25,736 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:04:25,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371227959] [2022-12-14 05:04:25,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371227959] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:04:25,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [344437223] [2022-12-14 05:04:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:04:25,736 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:04:25,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:04:25,738 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:04:25,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-14 05:04:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:04:25,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 05:04:25,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:04:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:04:37,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:04:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:04:49,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [344437223] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:04:49,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462580905] [2022-12-14 05:04:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:04:49,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:04:49,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:04:49,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:04:49,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:04:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:04:49,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 05:04:49,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:05:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:05:01,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:05:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:05:02,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462580905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:05:02,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:05:02,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9, 9, 9, 9] total 28 [2022-12-14 05:05:02,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965404627] [2022-12-14 05:05:02,282 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:05:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 05:05:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:05:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 05:05:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=611, Unknown=11, NotChecked=0, Total=756 [2022-12-14 05:05:02,283 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:05:13,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 05:05:15,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:05:16,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:05:20,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 05:05:21,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:05:22,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:05:28,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:06:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:06:38,216 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-12-14 05:06:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 05:06:38,223 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 [2022-12-14 05:06:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:06:38,224 INFO L225 Difference]: With dead ends: 56 [2022-12-14 05:06:38,224 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 05:06:38,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 129.2s TimeCoverageRelationStatistics Valid=423, Invalid=1444, Unknown=25, NotChecked=0, Total=1892 [2022-12-14 05:06:38,228 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 89 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:06:38,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 305 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 139 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2022-12-14 05:06:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 05:06:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-12-14 05:06:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 05:06:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-12-14 05:06:38,233 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 12 [2022-12-14 05:06:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:06:38,233 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-12-14 05:06:38,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:06:38,233 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-12-14 05:06:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 05:06:38,233 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:06:38,233 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:06:38,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 05:06:38,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:06:38,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-12-14 05:06:38,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:06:38,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:06:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:06:38,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1767906835, now seen corresponding path program 2 times [2022-12-14 05:06:38,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:06:38,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002922417] [2022-12-14 05:06:38,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:06:38,839 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 [2022-12-14 05:06:38,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:06:38,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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) [2022-12-14 05:06:38,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/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 [2022-12-14 05:06:46,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:06:46,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:06:46,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 05:06:46,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:08:08,577 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:08:25,446 WARN L837 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~x~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_gcd_test_~b#1_23| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_23|))) (let ((.cse2 ((_ sign_extend 24) |ULTIMATE.start_main1_~x~0#1|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (and (= (_ bv0 32) ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1)))) (not (bvsge .cse2 .cse1)) (not (bvslt .cse2 (_ bv0 32))) (bvslt .cse3 (_ bv0 32))))))))) is different from false [2022-12-14 05:08:27,458 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~x~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_gcd_test_~b#1_23| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_23|))) (let ((.cse2 ((_ sign_extend 24) |ULTIMATE.start_main1_~x~0#1|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (and (= (_ bv0 32) ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1)))) (not (bvsge .cse2 .cse1)) (not (bvslt .cse2 (_ bv0 32))) (bvslt .cse3 (_ bv0 32))))))))) is different from true [2022-12-14 05:08:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:08:27,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:11:41,475 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_8| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse2 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_8|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (or (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32))) (bvsge .cse2 .cse1) (bvslt .cse2 (_ bv0 32)) (not (bvslt .cse3 (_ bv0 32)))))))))) is different from false [2022-12-14 05:11:43,498 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_8| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse2 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_8|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (or (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32))) (bvsge .cse2 .cse1) (bvslt .cse2 (_ bv0 32)) (not (bvslt .cse3 (_ bv0 32)))))))))) is different from true [2022-12-14 05:11:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:58,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:11:58,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002922417] [2022-12-14 05:11:58,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002922417] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:11:58,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1285937510] [2022-12-14 05:11:58,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:11:58,168 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:11:58,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:11:58,169 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:11:58,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 05:11:58,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:11:58,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:11:58,552 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 05:11:58,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:14:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:14:18,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:14:51,138 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_9| (_ BitVec 8))) (let ((.cse2 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse0 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_9|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse2))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse5))))) (let ((.cse3 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse3))))) (or (bvsge .cse0 .cse1) (not (bvslt .cse2 (_ bv0 32))) (not (= (_ bv0 32) ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse1))))) (not (bvsgt .cse0 (_ bv0 32)))))))))) is different from false [2022-12-14 05:14:53,162 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_9| (_ BitVec 8))) (let ((.cse2 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse0 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_9|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse2))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse5))))) (let ((.cse3 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse3))))) (or (bvsge .cse0 .cse1) (not (bvslt .cse2 (_ bv0 32))) (not (= (_ bv0 32) ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse1))))) (not (bvsgt .cse0 (_ bv0 32)))))))))) is different from true [2022-12-14 05:15:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:15:07,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1285937510] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:15:07,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635906081] [2022-12-14 05:15:07,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:15:07,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:15:07,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:15:07,962 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:15:07,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47306e25-6ad2-4a4f-a10f-2891a25a320c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:15:11,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:15:11,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:15:11,649 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 05:15:11,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:17:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:17:13,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:17:46,860 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_10| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse0 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_10|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse5))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse2 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse1))))) (or (bvslt .cse0 (_ bv0 32)) (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse2))) (_ bv0 32))) (bvsge .cse0 .cse2) (not (bvslt .cse3 (_ bv0 32)))))))))) is different from false [2022-12-14 05:17:48,885 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_10| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse0 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_10|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse5))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse2 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse1))))) (or (bvslt .cse0 (_ bv0 32)) (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse2))) (_ bv0 32))) (bvsge .cse0 .cse2) (not (bvslt .cse3 (_ bv0 32)))))))))) is different from true [2022-12-14 05:18:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:18:03,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635906081] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:18:03,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:18:03,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 33 [2022-12-14 05:18:03,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211715622] [2022-12-14 05:18:03,470 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:18:03,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 05:18:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:18:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 05:18:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=621, Unknown=107, NotChecked=228, Total=1056 [2022-12-14 05:18:03,473 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:18:05,493 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_8| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse2 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_8|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (or (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32))) (bvsge .cse2 .cse1) (bvslt .cse2 (_ bv0 32)) (not (bvslt .cse3 (_ bv0 32)))))))))) (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_9| (_ BitVec 8))) (let ((.cse8 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse6 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_9|)) (.cse11 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse8))))) (let ((.cse10 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse11))))) (let ((.cse9 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse11 .cse10))))) (let ((.cse7 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse10 .cse9))))) (or (bvsge .cse6 .cse7) (not (bvslt .cse8 (_ bv0 32))) (not (= (_ bv0 32) ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse9 .cse7))))) (not (bvsgt .cse6 (_ bv0 32)))))))))) (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_10| (_ BitVec 8))) (let ((.cse15 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse12 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_10|)) (.cse17 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse15))))) (let ((.cse16 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse12 .cse17))))) (let ((.cse13 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse17 .cse16))))) (let ((.cse14 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse16 .cse13))))) (or (bvslt .cse12 (_ bv0 32)) (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse13 .cse14))) (_ bv0 32))) (bvsge .cse12 .cse14) (not (bvslt .cse15 (_ bv0 32))))))))))) is different from false [2022-12-14 05:18:07,562 WARN L859 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_8| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse2 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_8|)) (.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (or (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32))) (bvsge .cse2 .cse1) (bvslt .cse2 (_ bv0 32)) (not (bvslt .cse3 (_ bv0 32)))))))))) (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_9| (_ BitVec 8))) (let ((.cse8 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse6 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_9|)) (.cse11 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse8))))) (let ((.cse10 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse11))))) (let ((.cse9 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse11 .cse10))))) (let ((.cse7 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse10 .cse9))))) (or (bvsge .cse6 .cse7) (not (bvslt .cse8 (_ bv0 32))) (not (= (_ bv0 32) ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse9 .cse7))))) (not (bvsgt .cse6 (_ bv0 32)))))))))) (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8)) (|v_ULTIMATE.start_main1_~x~0#1_10| (_ BitVec 8))) (let ((.cse15 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse12 ((_ sign_extend 24) |v_ULTIMATE.start_main1_~x~0#1_10|)) (.cse17 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse15))))) (let ((.cse16 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse12 .cse17))))) (let ((.cse13 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse17 .cse16))))) (let ((.cse14 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse16 .cse13))))) (or (bvslt .cse12 (_ bv0 32)) (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse13 .cse14))) (_ bv0 32))) (bvsge .cse12 .cse14) (not (bvslt .cse15 (_ bv0 32))))))))))) is different from true